Clonality Test by PCR - PARR in Real Time of Canine Lymphomas

Background: Lymphoma is a neoplasm of hematopoietic origin that affects canines. The proper establishment of prognosis and rapid institution of treatment are essential for a better quality of life, and immunophenotyping is one of the tools used for this purpose. The objective of this study was to perform a clonality test for immunophenotypic characterization of canine lymphomas using the polymerase chain reaction (PCR) for antigen receptor rearrangements (PARR) technique in real-time from samples fixed in formalin and embedded in paraffin.Materials, Methods & Results: The 23 analyzed samples were fixed in formalin and embedded in paraffin canine lymphoma from the Collection Laboratory of Histopathology of the Animal Pathology Area of the Departament of Veterinary Medicine - Federal Rural University of Pernambuco UFRPE. Samples were processed, their DNA was extracted, quantified, diluted, and standardized at a concentration of 50 ng/µL. After extraction, all samples were subjected to conventional PCR for endogenous control (detection of the IgM target region), in which the extracted DNA was amplified in a final volume of 25 µL. The 128 bp amplified product was detected by 1.5% agarose gel electrophoresis. Of the 23 samples analyzed for the detection of the conserved region referring to the endogenous gene, 91.30% (21/23) amplified the conserved region Cµ by conventional PCR, and two samples 8.70% (2/23) were negative. Endogenous control positive samples were subjected to real-time PCR-PARR for detection of IgH Major (LB), IgH Minor (LB), and TCRγ (LT) target regions. All reactions were performed in duplicate to reduce the risk of false-positive or false-negative results due to technical errors. Samples previously confirmed by immunohistochemistry were used as positive controls for T cell and B cell lymphoma, and MilliQ water was used as a negative control. After amplification, the melting curve gradually increased the temperature by 1C/5 s to 95C during continuous fluorescence monitoring. Of the 21 samples analyzed, 100.00% (21/21) demonstrated clonal amplification. Of these, 57.15% (12/21) were positive for phenotype B, and 42.85% (9/21) were positive for phenotype T.Discussion: Due to the importance of researching and confirming samples from files fixed and embedded in paraffin samples in laboratories, PCR-PARR is a good tool for this purpose. In the present study, real-time PCR analysis demonstrated greater sensitivity in the characterization of the immunophenotype of lymphomas from old samples fixed in formalin and embedded in paraffin. The temperature of melting curve analysismay vary depending on the amount of DNA and its quality. In the present study, it was found that the average melting temperature in the samples varied between ± 3C when compared to that in the control sample for LB and LT, 83.5C and 80C, respectively: in the literature, there is a relative difference in this temperature, which may vary up to 4C. Real-time PCR-PARR was satisfactory in the characterization of the immunophenotype of canine lymphomas from formalin-fixed and paraffin-embedded samples; therefore, its use is recommended for both retrospective studies. The use of PCR-PARR associated with histopathological and/or cytopathological examination in cases of canine lymphomas strongly helps pathologists, provide a safe establishment of the immunophenotype, minimize errors, and optimize the diagnosis, thus directly contributing to the establishment of the prognosis.Keywords: immunophenotyping, lymphoproliferative disease, real-time PCR, TCRγ, IgH

Botulismo em cão sem raça definida - relato de caso

O botulismo é uma intoxicação causada pela toxina do bacilo Clostridium botulinum, encontrado frequentemente no solo. Há oito tipos de toxinas (A até H), onde a toxina do tipo C é a que mais acomete os caninos. A intoxicação é causada pela ingestão de alimentos deteriorados ou carcaças em decomposição. Sua ocorrência é rara em carnívoros. O seu diagnóstico se dá por alterações clínicas e histórico de ingestão de alimento deteriorado. O presente trabalho tem por objetivo, relatar um caso de botulismo em um cão, sem raça definida, atendido no Hospital Veterinário da Universidade Federal Rural de Pernambuco apresentando paralisia flácida com evolução de 24h, vindo a óbito no dia seguinte com histórico de ingestão de carcaça de um bovino em estado avançado de putrefação. O botulismo mesmo sendo considerado raro em cães é uma enfermidade a ser considerada na clínica médica de pequenos. O destino adequado dos resíduos, lixo e de carcaças deterioradas é um ótimo modo de profilaxia para esta doença

First Report of Equine Leishmaniosis in the State of Sergipe, Brazil

Background: Leishmaniasis is caused by an obligate intracellular protozoan of the genus Leishmania. In Brazil, the species Leishmania (Leishmania) infantum is reported as an etiological agent of leishmaniasis. Transmission of the disease occurs through bite of the sand fly mosquitoes Lutzomyia longipalpis and Lutzomyia cruzi, present in several regions of Brazil, including the state of Sergipe, where they are considered endemic. Although few cases have been reported in other states of Brazil, no case of cutaneous leishmaniasis in horses has been reported in Sergipe. The objective of this study was to report a case of cutaneous leishmaniasis in a horse in the municipality of Itaporanga d'Ajuda, Sergipe, Brazil.Case: A 2-year-old female quarter-horse was examined by a private veterinarian due to the presence of a nodular lesion on the mucocutaneous region of the lips. Macroscopically, the nodule was alopecic with depigmented areas, measuring approximately 1.0 cm in diameter, and there was a focal ulcer in the region of the labial commissure. Excisional biopsy was performed as follows; the material obtained was fixed in 10% buffered formalin and sent for histopathological examination. Further, it was subjected to routine histological processing by embedment in paraffin and hematoxylin-eosin staining. Microscopically, there were intense multifocal to coalescent lymphohistioplasmocytic infiltrates with epithelioid macrophages and multinucleated giant cells, both containing amastigote forms comparable with Leishmania spp. Morphological diagnosis was defined as extensive multifocal to coalescent chronic granulomatous dermatitis with intracytoplasmic amastigote forms. Furthermore, for positive controls, immunohistochemical examination was performed using serum from dogs naturally infected with L. (L.) infantum, which resulted in a strongly positive immunostaining of innumerable intracytoplasmic amastigote structures, confirming infection by Leishmania infantum.Discussion: Leishmaniasis is a public health problem and is frequently studied. In the biological cycle of the parasite, canids are considered as reservoirs, and humans are considered as accidental hosts. However, in endemic rural areas, several species of mammals can be infected. Microscopic lesions of cutaneous leishmaniasis are compatible with granulomatous dermatitis, characterized by lymphohistioplasmocytic inflammatory infiltrates with epithelioid macrophages containing amastigote forms. Age, breed, and sex are not considered predisposing factors for this disease and their transmission depends on the existence of the vector in the environment. The diagnosis is based on serological, molecular, and immunohistochemical techniques; in the present study, immunohistochemistry was performed for diagnostic confirmation using serum from dogs naturally infected with L. (L.) infantum. It was found that this antibody can be successfully applied in the immunohistochemical diagnosis of leishmaniasis in tissues of horses. Histopathological examination including immunohistochemical analysis was essential to confirm the diagnosis. To the best of our knowledge, this is the first report of Leishmania infantum infection in a horse in the state of Sergipe, Brazil. It is essential to carry out epidemiological studies to define control measures to be implemented in the state since it is important for public health.

Chemodectoma in a Dog

Background: The chemodectoma is a rare neoplasm that originates from chemoreceptors located mainly in the aortic body, and carotid body and sinus, and responsible for detecting variations in blood pH, oxygen pressure and carbon dioxide. Dogs of brachiocephalic breeds and aged between 7 and 15 years have greater propensity. A neoplasm involves infiltrative growth in the vessels at the heart base, which leads to Congestive Heart Failure (CHF). The definitive diagnosis is performed by histopathological and/or immunohistochemical examination. The aim was to report a case of chemiodectoma in a dog, showed the disease clinical characteristics.Case: A 13-year-old male undefined breed dog was examinated in the medical clinic of small animal of Veterinary Hospital, Federal Rural University of Pernambuco (UFRPE) with respiratory effort, hyporexia, and edema in face, cervical, ventral thorax and thoracic limbs, with thirty days evoluted. About physical examination, we observed cachexia, orthopneic position, cyanosis and edema with a positive Godet sign, as well as 8% dehydration degree. Thoracic auscultation presented mixed dyspnea and muffled heart sounds. Chest radiography detected an radiopacity increase in pulmonary section and metastatic neoplastic process associated with pleural and pericardial effusion. Fluid therapy with lactated ringer and posterior thoracentesis in the right hemithorax region was performed for greater respiratory comfort for the patient. Hematological count and biochemical profiles stated normochromic normocytic anemia, relative and absolute lymphopenia, thrombocytopenia, as well as increased alanine aminotransferase (ALT) and aspartate aminotransferase (AST). The patient died after 12 hours when was submitted to necroscopic examination and histopathological evaluation. An infiltrative tumor of cardiac base was observed invading the light of the right atrium, obstructing the venous return, as well as a large thrombus located in the left ventricle and diffuse nodules in the lungs. Hydrothorax and hydroperitoneum were observed with serous fluid, with hepatic, renal and brain congestion, and duodenum hemorrhage. Histologically, the tumor was characterized as a chemodectoma with pulmonary metastasis.Discussion: Cardiac tumors are uncommon for canine population. A study sampled 729,265 dogs with observed incidence reaching 0.19%. The most common type is hemangiosarcoma with 69%, followed by chemiodectoma and lymphoma. Authors describe predisposed brachycephalic breeds such as Boxer, Boston Terrier and French Bulldog. In our case, the patient had elongated snout and undefined breed. Deregulation of chemoreceptors, which detect changes in pH and partial oxygen and carbon dioxide pressures, can result in hyperpnea and dyspnoea. Edema represents a deficit in venous return from the cranial and cervical regions, with consequent increase in hydrostatic pressure and liquid leakage into the thoracic cavity and subcutaneous tissue, thus inferring the Caudal Vena Cava Syndrome (CVCS). Tumors from the cardiac base, integrated with the large arteries insertion and adjacent to the atria, can cause pericardial effusion observed in this case. Chemodectomas are described as essentially benign tumors with low metastatic potential. In this case, pulmonary metastasis was detected. Surgical treatment is recommended when feasible. In this case, the patient had late veterinary care, in addition to the contraindication for surgery by the lung metastasis presence

Gastroesophageal Intussusception in Canine

Background: Gastroesophageal intussusception is characterized by the invagination of the stomach into the esophagus, with or without the involvementof adjacent organs such as the spleen, pancreas, and omentum. In dogs, this condition has no breed or sex predisposition. As it is an infrequent disease in routine veterinary medical practice, this study reports a case of gastroesophageal intussusception in a dog necropsied at the Veterinary Hospital of the Federal Rural University of Pernambuco (HOVET - UFRPE), Recife, Brazil.Case: The body of a 12-year-old black mixed breed male dog was sent to the Pathology Department (Necropsy Sector of the Federal Rural University of Pernambuco - UFRPE) for a necropsy. The animal had a previous 4-year history of recurrent emesis and limb weakness, primarily in the anterior limbs, that worsened in the previous months and progressed to death. No previous treatments were reported by the owner. On external examination, the animal had a low body score (cachectic), forelimb joints with great flexibility, congested oral and ocular mucous membranes, enophthalmos, and increased volume in the perianal region. At the opening of the thoracic cavity, the final third of the esophagus was dilated and gastroesophageal intussusception, edema, and pulmonary congestion were noted. In the abdominal cavity, there was hepatic and renal congestion and large intestine and rectal ampoule dilation, with a large amount of solid and retained feces (fecaloma), perianal hernia, and testicular neoformation. These findings were consistent with those observed in death caused by cardiorespiratory failure secondary to gastroesophageal intussusception.Discussion: The pathophysiology of gastroesophageal intussusception is still not elucidated and is probably multifactorial. This condition causes reverse gastric peristalsis associated with a sudden and sustained increase in abdominal pressure. Some probable predisposing factors for this pathological condition are esophageal motility disorders, lower esophageal sphincter dysfunction, and hiatal enlargement. In dogs, gastroesophageal intussusception is associated with increased intra-abdominal pressure owing to emesis or blunt trauma, negative intrathoracic pressure caused by respiratory, and previous esophageal diseases, especially megaesophagus. Partial or total obstruction caused by intussusception leads to circulatory disorders in the organs, especially decreased venous return. Persistence of this condition can lead to gastric necrosis and rupture followed by endotoxic (or septic) shock and release of inflammatory mediators that can cause cardiovascular and respiratory dysfunction and rapid death. Impaired circulation is macroscopically evident in several organs, characterized by mucosal, lung, liver, and kidney congestion, in addition to cardiac dilation and mitral valve endocardiosis. The occurrence of stomach invagination into the esophagus dilated in the final portion is characteristic of gastroesophageal intussusception. Moreover, death owing to cardiorespiratory failure is related to cardiac (dilatation and endocardiosis) and pulmonary (edema and congestion) involvement secondary to gastroesophageal intussusception. Since thispotentially fatal condition has a low incidence in small animals and often goes unnoticed by professionals, early and correct diagnosis along with surgical treatment are essential for a good prognosis and favorable progression

Esophageal Perforation Associated with a Foreign Body in a Dog

Background: The esophagus is a tubular organ that connects the laryngopharynx to the stomach. This organ has three points of narrowing: the thoracic inlet, the base of the heart, and the diaphragmatic hiatus; these are common sites of obstruction by foreign bodies. Clinical signs of esophageal obstructions include sialorrhea, dysphagia, regurgitation, dehydration, and depression. The diagnosis is based on clinical examination, anamnesis, and complementary imaging. The treatment requires the removal of the foreign body. Herein, we report a case of esophageal perforation associated with a foreign body in a Spitz German treated at the Veterinary Hospital of the Federal Rural University of Pernambuco.Case: A 2-year-old female German Spitz was referred to the Veterinary Hospital of the Federal Rural University of Pernambuco (HV-UFRPE); she presented with recurrent drooling and emesis. According to the instructor, approximately five days after a party at the residence, the animal began to exhibit clinical signs. She was examined at a veterinary clinic, where she remained hospitalized for three days, without clinical improvement. She was then taken to the HV-UFRPE for further assessment. Upon physical examination, sialorrhea, hypercormed conjunctival mucosa, hyperthermia (41ºC), and regurgitation were observed. Imaging tests (simple radiography and ultrasonography), blood count, and a serum biochemistry panel (urea, creatinine, alanine aminotransferase, alkaline phosphatase, total protein, and albumin) were requested. The radiographic examination revealed a pulmonary interstitial pattern and pleural effusion. Analysis of the thoracic fluid yielded results consistent with a septic exudate. No significant changes were observed on total abdominal ultrasonography. The hemogram showed thrombocytosis, leukocytosis with absolute neutrophilia, as well as relative and absolute monocytosis. Esophagoscopy was offered, but the test was not performed and the patient died 24 h after its, being heading for necropsy. On necropsy, diffuse fibrinous pleuropneumonia filling the thorax was observed. The heart showed concentric hypertrophy of the left ventricle. The esophagus was obstructed by a food object, causing a necrotic, ulcerative esophagitis with perforation. In the abdominal cavity, hepatic and renal congestion were observed along with early-phase gestation (first trimester). Other organs lacked significant changes, and the cause of death was attributed to septic shock secondary to esophageal perforation. Tissue samples from the heart, lungs, and esophagus were obtained for histopathological examination. Diagnoses included cardiomyocyte hypertrophy and heart congestion, subacute interstitial pneumonia, diffuse chronic pulmonary edema, and necrotizing ulcerative esophagitis.Discussion: The presence of an esophageal foreign body is considered a veterinary emergency. Small-breed dogs are more often affected by foreign bodies, as are young animals with a depraved appetite and lack of selectivity with respect to food. The most common foreign bodies reported in literature are bones, as they are frequently offered to pets. In this report, a carrot caused esophageal obstruction. Current literature recommends that a complete anamnesis and physical examination, including cervical and thoracic radiography, be performed in animals with suspected foreign material in their esophagus. This case contextualizes a problem that requires full attention, directly related to a dog’s accessibility to and consumption of objects or foods that can result in esophageal obstruction. Therefore, education by the instructor is considered essential in the prevention of these conditions

Linfoma imunoblástico em cão

Objetivou-se com este trabalho relatar um caso de linfoma imunoblástico em uma cadela diagnosticado pelo exame citopatológico. Analisou-se um animal da espécie canina, fêmea, sem raça definida, cinco anos de idade, procedente do Hospital Veterinário da Universidade Federal Rural de Pernambuco. De acordo com o histórico, o animal apresentou há aproximadamente três meses edema submandibular e em membros pélvicos que persistiam, com posterior aparecimento de nodulações nestas regiões, além de emagrecimento progressivo. Ao exame clínico foi constatado o aumento generalizado dos linfonodos superficiais e severa hipertrofia dos linfonodos submandibulares. Realizou-se a coleta de amostras dos linfonodos superficiais pela técnica de Citologia Aspirativa por Agulha Fina (CAAF), para diagnóstico citopatológico. A análise microscópica da amostra obtida pela CAAF revelou alta celularidade, presença de população de células de perfil linfocitário, compatíveis com imunoblastos, apresentando diâmetro nuclear variando entre uma e meia a duas hemácias, cromatina vesicular e nucléolo proeminente e central, citoplasma de basofilia leve a moderada. Foram observados também mitoses atípicas, acentuado pleomorfismo celular, anisocitose e anisocariose. Neste relato o linfoma foi anatomicamente classificado em multicêntrico. As alterações descritas ao exame citopatológico associadas ao histórico clínico do animal são compatíveis com linfoma imunoblástico de alto grau, sendo este o primeiro registro em um cão no estado de Pernambuco. A classificação citomorfológica associada a outros parâmetros pode propiciar ao médico veterinário um adequado direcionamento terapêutico, bem como auxiliar no estabelecimento do prognóstico

Systemic Cryptococcosis in a Miniature Schnauzer Dog

Background: Cryptococcosis is an important zoonotic disease that occurs worldwide. The disease is caused by a soilborne opportunistic fungus of the genus Cryptococcus, which can also be found in the feces of birds, especially pigeons. In Brazil, the geographical distribution of the agent is fairly defined, with the species C. gattii predominantly found in thenorth-eastern states. Diagnosis is based on the clinical history, physical examination findings, and results of complementary testing, such as cytopathological and histopathological examinations. This report aims to describe the clinical and anatomopathological findings in a case of systemic cryptococcosis in a dog.Case: A 4-year-old female Miniature Schnauzer was referred for necropsy. For 3 months prior to death, the dog had displayed generalized alopecia, pruritus, and severe weight loss, Initially, a private veterinarian had suspected leishmaniasis. Gross examination was performed and samples for cytopathology, histopathology, and fungal culture were obtained. Themacroscopic examination revealed generalized alopecia, congested mucosa, cachexia, hyperemia of the brain, and multiple white nodules measuring 0.5 cm to 4 cm in the lungs and the kidneys. None of the other organs showed significant lesions. Cytopathological examination of the nodules revealed a highly cellular sample, with a severe chronic inflammatory response, characterized by multinucleated giant cells and round-to-elliptical, yeast-shaped structures (5-10 μm), suggestive ofCryptococcus organisms. Histopathological examination of the lungs, kidneys, and brain revealed a severe diffuse chronic inflammatory process, with lymphocytic infiltration and multinucleated giant cells; countless yeast-shaped, round-to-ovoid structures (similar in appearance to “soap bubbles”) that were negative in hematoxylin-eosin stain were also present.Grocott’s methenamine silver stain was then applied, which positively stained the organism capsules black, confirming Cryptococcus. For mycological diagnosis, samples from the lungs nodules were cultured on Sabouraud’s dextrose agar supplemented with chloramphenicol 0.4% and incubated for 7 days at 25-30ºC. Abundant small, smooth, irregular-sized,cream-colored colonies were obtained, and a mycological smear, stained by India ink, was performed.Discussion: Considered an uncommon disease, canine cryptococcosis can be misdiagnosed. Clinical findings, such as alopecia, lymphadenopathy, and cutaneous nodules that may be ulcerated, are commonly seen in these patients due to the hematogenous spread of the organism. In the case described, the dog’s owner was contacted and asked to provide epidemiological information. The owner reported that the dog had lived in an apartment, with little access to the street; however, pigeons were frequently observed on the balcony, along with pigeon feces in the dog feeder. The presence of pigeon feces is a risk factor for the development and spread of the fungus, which may be problematic to public health. Cytopathological examination is a simple, quick diagnostic tool with good sensitivity for some infectious agents. Mycological culture can provide results due to the characteristic of the Cryptococcus sp., since the encapsulated yeast produces a mucous-like colony. Cryptococcosis has a relevant role in public health, so a precise diagnosis is imperative. Its diagnosis is based upon culture, cytology and serological tools. When the animal does not survive to the ilness, the association between necropsyfindings and histopathological examinations is essencial.Keywords: canine, diagnostic, yeast, anatomopathology

Simultaneous Occurrence of Hemangiosarcoma and Grade II Mast Cell Tumor in a Pit Bull Terrier

Background: The incidence of cutaneous neoplasms in dogs is high and quite variable. Hemangiosarcoma (HSA) and mast cell tumor (MCT) are commonly diagnosed neoplasms in isolation; however, reports of concomitant occurrence in a single patient are rare. HSA is a malignant mesenchymal neoplasm of endothelial origin; the spleen is the most commonly affected organ. MCT is a common neoplasm that may affect any region of the body, without predilection for sex, although some breeds have shown higher incidence. This report describes a case of HSA and MCT in a Pit bull terrier.Case: A 5-year-old white male Pit bull was presented to the Small Animal Clinic of the Federal Rural University of Pernambuco with nodules in preputial region measuring 5,4 x 3,7 cm and an ulcerated nodule in the right lateral thoracic region measuring 23,0 x 19,0 x 5,5 cm. The owner reported surgical excision of two previous nodules one year before the consultation, but neither were submitted for cytopathological or post-surgical histopathological examination. Two months after the procedure, the nodules recurred. Cytopathological examinations of preputial and lateral thoracic nodules were performed, with a suggestive diagnosis for HSA and MCT, respectively. Due to the unfavorable prognosis and the weakness of the animal, euthanasia was elected. Necroscopic examination revealed an ideal body condition score (4/9), hypertrophy of right pre-scapular and axillary lymph nodes, red hepatization in the apical lobe of the right lung, with multiple, soft and pigmented nodules in the spleen, liver, pancreas and testis. Several tissue samples were collected, conditioned in 10% buffered formaldehyde solution, routinely processed for histology, and stained with hematoxylin-eosin and toluidine blue. Microscopically, the lateral thoracic nodule consisted of round cells in cordonal arrangement, with sparse basophilic and discretely granular cytoplasm, and a round, central nucleus with a single evident nucleolus. Some cells were positively marked by toluidine blue, and the neoplasm was classified as grade II MCT. The preputial and digital nodules were confirmed as well-differentiated HSA, with fusiform cells forming vascular structures containing large numbers of erythrocytes and irregular fibrovascular stroma. Metastases of HSA were observed in the lung, liver, spleen, pancreas, and testis. Invasion of mast cells was observed in lymph node.Discussion: Although the etiology of HSA has not yet been clarified, its occurrence in dogs with poorly pigmented skin exposed to ultraviolet light is well established, consistent with observations in this case. MCTs often occur on the pelvic and thoracic limbs, abdomen, and chest. Primary site of HSA may be in any tissue, but it is commonly seen in highly vascular organs such as the spleen. When it occurs on the skin, HSA has more frequently been reported in the preputial and scrotal regions in dogs. For both neoplasms, the locations in this Pit bull corresponded to those commonly reported. MCTs with ulceration, edema, pruritus, and flushing are associated with worse prognosis. Metastasis is a major concern when evaluating oncologic patients. While it is difficult to determine the primary site of HSAs, metastasis often occurs in the lungs and liver. In this case, metastatic lesions were identified in the lungs, liver, spleen, pancreas, and testis by necropsy and histopathology. Fine needle aspiration of neoplasm-suggestive lesions should be performed prior to surgical procedures, especially because of its high sensitivity for MCTs. MCT and HSA are tumors of great significance, due to their high occurrence and variable prognosis. Multidisciplinary diagnostics involving clinical and pathological aspects are essential to guide the prognosis and treatment of these tumors.Mariana Lumack do Monte Barretto, Rômulo Freitas Francelino Dias, Saulo Romero Felix Gonçalves, Órion Pedro da Silva, Roseane Oliveira Feitosa, Stephanie Caroline Gueiros Silva, Valdemiro Amaro da Silva Junior & Andrea Alice da Fonseca Oliveir

Linfoma cutâneo não-epiteliotrópico em cão

Objetivou-se relatar um caso de linfoma cutâneo não-epiteliotrópico em canino, destacando-se os aspectos clínicos e patológicos da neoplasia. Foi atendido no Hospital Veterinário da Universidade Federal Rural de Pernambuco (UFRPE), um cão de raça Shih-Tzu, macho, não castrado, com sete anos e pesando aproximadamente 5,3kg. O paciente apresentava neoformação ulcerada, eritematosa e com secreção purulenta em formato de anel em região do cotovelo no membro anterior direito e nódulo ulcerado e com presença de crostas em região do membro posterior esquerdo. Foram realizadas análises hematológicas, bioquímica sérica, citologia aspirativa por agulha fina e biópsia para análise histopatológica. No hemograma, detectou-se anemia normocítica normocrômica com leucocitose e neutrofilia relativa e absoluta. Ao exame bioquímico, observouse a presença de hiperproteinemia e hiperglobulinemia. A citologia demonstrou alta celularidade, com presença de células multinucleadas e figura de mitose. No exame histopatológico foi observada acentuada celularidade composta por células redondas, infiltrados neoplásicos dispostos em cordões localizados na derme profunda e tecido subcutâneo, sendo então, estabelecido o diagnóstico de linfoma cutâneo não epiteliotrópico. Por se tratar de uma enfermidade sistêmica, o linfoma torna-se uma neoplasia de difícil tratamento. O diagnóstico pela citologia aspirativa juntamente com o exame histopatológico e sinais clínicos foram essenciais para o diagnóstico de Linfoma não-epiteliotrópico no presente relato