IMMUNOHISTOCHEMICAL ANALYSIS BY KI67 AND IDH1 IN PATIENTS WITH CHONDROSARCOMA

ABSTRACT Objective: To perform an immunohistochemical evaluation using the IDH1 and Ki67 markers in patients who underwent treatment for chondrosarcoma in a reference service center in Brazil. Methods: Retrospective analytical observational study using medical records of patients diagnosed with chondrosarcoma. Besides the epidemiological and clinical profile, important variables for prognosis and correlation with immunohistochemical analysis results with Ki67 and IDH1 markers were evaluated. Results: Histopathological examinations by immunohistochemistry of 56 patients were analyzed, 52% of which were women, with the age group 20-60 years being more prevalent. Grade 1 and 2 histological subtypes corresponded to most chondrosarcomas. The femur, humerus, and tibia were the most frequent anatomical sites. Most tumors (59%) were larger than 8 cm. Ki67 expression was very low (< 10%) in 98% of patients. The analysis of IDH1 was positive in 43% of the cases. The correlation between IDH1 positivity and tumor size was statistically significant, but regarding survival, we observed no significance. Conclusion: Immunohistochemical analysis using IDH1 and Ki67 markers in patients with conventional chondrosarcoma is not useful for prognostic guidance. Level of Evidence II, Prognostic Assessment, Results of Immunohistochemical Tests and Correlation with Survival

Doença de Paget óssea monostótica em vértebra lombar: uma localização atípica

Paciente do sexo feminino, 41 anos, cor branca, com queixa de dor lombar há mais de três anos, sem irradiações, submetida há vários exames radiográficos sendo diagnosticada, por biópsia, doença de Paget monostótica na terceira vértebra lombar. Trata-se de uma localização incomum

Meigs' syndrome with elevated CA 125: case report

CONTEXT: Meigs' syndrome consists of a benign ovarian tumor accompanied by ascites and hydrothorax. Elevated serum CA 125 levels in postmenopausal women with solid adnexal masses, ascites and pleural effusion are highly suggestive for malignant ovarian tumor. However, patients with Meigs' syndrome can also have elevated serum CA 125 levels. The authors report a case of Meigs' syndrome with elevated CA 125 level. OBJECTIVE: This is a case report of Meigs' syndrome with elevated CA 125 level. CASE REPORT: A 65-year-old Brazilian woman had presented progressive dyspnea, weight loss and decline in general condition over the 7 months preceding admission to our service. In another hospital, the patient had been submitted to thoracic drainage due to pleural effusion. With recurrence of the pleural effusion and increase in abdominal volume due to ascites and a pelvic mass, the patient sought our service. Transvaginal ultrasound showed an extensive adnexal solid mass of 16.4 x 10.8 cm located in the pelvis without exact limits, and the serum CA 125 level was elevated. With a preoperative diagnosis of ovarian carcinoma, the patient was submitted to exploratory laparotomy, which revealed a left ovarian tumor. The frozen section diagnosis was thecoma. Total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed. The histology of the specimen confirmed the diagnosis of thecoma. The patient was asymptomatic with a normal serum CA 125 level 20 months after the operation

Closed head injury in rats: histopathological aspects in an experimental weight drop model Trauma craniano fechado em ratos: aspectos histopatológicos em um modelo experimental de queda de peso

PURPOSE: To study histopathological findings due to a model of closed head injury by weight loss in rats. METHODS: A platform was used to induce closed cranial lesion controlled by weight loss with a known and predefined energy. 25 male Wistar rats (Rattus novergicus albinus) were divided in five equal groups which received different cranial impact energy levels: G1, G2, G3 and G4 with 0.234J, 0.5J, 0.762J and 1J respectively and G5 (Sham). Under the effect of analgesia, the brain of each group was collected and prepared for histopathological analysis by conventional optic microscopy. RESULTS: It was observed greater number of injured neurons in animals of group 4, however neuronal death also could be noticed in animals of group 5. Intraparenchymal hemorrhages were more frequent in animals of group 4 and the cytotoxic brain swelling and vascular congestion were more intense in this group CONCLUSION: The histopathological analysis of these findings allowed to observe typical cranial trauma alterations and these keep close relation with impact energy.<br>OBJETIVO: Investigar as alterações histopatológicas produzidas por um modelo de trauma craniano fechado por queda de peso em ratos. MÉTODOS: Utilizando uma plataforma para produção de lesão craniana fechada controlada por queda de peso com energia pré-definida e conhecida, 25 ratos Wistar machos (Rattus norvegicus albinus) foram divididos em cinco grupos iguais que receberam níveis diferentes de energia de impacto craniano: G1, G2, G3 e G4 com 0,234J, 0,5J, 0,762J e 1J respectivamente e G5 (Sham). Sob analgesia, cada grupo teve seus encéfalos coletados e processados para análise histopatológica por microscopia óptica convencional. RESULTADOS: Houve maior número de neurônios lesados em animais do grupo 4, mas morte neuronal também pôde ser constatada nos animais do grupo 5. Hemorragias parenquimatosas foram mais frequentes nos animais do grupo 4 e o inchaço cerebral citotóxico e congestão vascular foram mais intensos neste grupo. CONCLUSÃO: Os achados à análise histopatológica permitem observar alterações típicas do trauma craniano e estas guardaram proporção direta com a energia do impacto