Osteosarcoma of the ethmoid sinus: About a case

Osteosarcomas of the craniofacial bones account for less than 10% of all osteosarcomas. Primary osteosarcomas of the nasal cavity and paranasal sinus are rare localization (0.5%-8.1% of osteosarcomas occur in this site). Accordingly, we report a case of osteosarcoma arising de novo from the ethmoid bone in a 46-year-old female. Initially, she presented with headache, bilateral epistaxis, and postnasal drip. Biopsy revealed an osteosarcoma ethmoidal. The patient was treated by a neoadjuvant chemotherapy followed by surgical resection and radiotherapy

A giant primary vaginal sarcoma: A report case and literature review

Primary vaginal sarcoma is a rare disease entity, reported in less than 3% of cases of vaginal cancers. We report the observation of a patient treated at the regional oncology center of Oujda in Morocco who is presented with a non-metastatic primary vaginal leiomyosarcoma of 20 cm. The treatment consisted of neoadjuvant chemotherapy, followed by hemostatic surgery with tumor resection limits, reinforced by radiotherapy and then a surgical resection with a tumor resection taking away the infiltrated part of the anterior face of the lower rectum and the realization of a left iliac colostomy whose resected tumor part limits were healthy. At present, the patient is 4 years of follow-up without locoregional or distant recurrence

Retroperitoneal desmoid tumor in a patient with familial adenomatous polyposis: A case report

Desmoid tumors are benign fibroblastic neoplasms, with locally invasive features and a tendency of recurrence. They are considered an aggressive non-metastatic fibromatosis. The retroperitoneal location is extremely rare. Their exact mechanism of occurrence is still controversial, but could be related to a genetic predisposition, hormonal factors or traumatic factors, including surgery. This entity faces management difficulties due to its rarity, the variable circumstances of its discovery, and the non-specific clinical manifestations. Their sensitivity to chemotherapy and radiotherapy is limited and surgery remains the only curative treatment in symptomatic cases, however observational waiting could consist the most appropriate management in selected asymptomatic patients, moreover it could avoid unnecessary morbidity from surgery or radiotherapy, which makes the management of this condition a multidisciplinary decision and should be adapted to fit the patients individually. We report a case of a retroperitoneal desmoid tumor in a 31-year-old woman with a history of familial adenomatous polyposis, through which we will discuss this extremely rare neoplastic entity

Signet-ring cell carcinoma of the caecum: A case report

Colorectal cancer (CRC) ranks as the third most prevalent cancer globally, with adenocarcinomas being the most frequent type. Signet ring cell carcinoma (SRCC) is a very rare subtype of adenocarcinoma, it commonly occurs in the stomach. However, other digestive localizations are possible including the colon, rectum, and gallbladder. Herein, we report a rare case of a metastatic caecal SRCC in a young male patient, presented to our department for abdominal diffuse pain and distention evolving for 3 months, associated with remarkable weight loss and asthenia. The clinical examination revealed abundant ascites and abdominal tenderness. Laboratory tests showed an elevated C-reactive protein at 35 mg/l (normal value: 13 g/dl), increased carcinoembryonic antigen (CEA) levels, as well as CA 19-9 and CA-125.The abdominal scan showed irregular and asymmetrical thickening with peripheral speculation of the caecum measuring 2.1 cm *5.8 cm. Additionally, adjacent adenopathies, abundant ascites, and peritoneal carcinomatosis were observed to be associated with suspicious bilateral pulmonary nodules and micronodules. The colonoscopy identified a bulging ulcerative tumor of the ileocecal valve extended to the ileum. Further histologic examination confirmed the presence of signet-ring cell carcinoma. The patient was referred to the medical oncology department to initiate palliative chemotherapy following a multidisciplinary consultation meeting. We can underline that SRCC of the caecum is a rare entity with a bad prognosis. Usually, the diagnosis is made at late stages due to the lack of obvious symptoms earlier