Malignant Peripheral Nerve Sheath Tumor of the Small Bowel: A Case Report and Review of the Literature.

Malignant peripheral nerve sheath tumor (MPNST) is an uncommon type of sarcoma that arises from a peripheral nerve or any tissue with nerve sheath differentiation. It does not have any specific symptoms and shows great variability in clinical and radiological findings. It is usually associated with neurofibromatosis type 1 (NF1).

Primary extrarenal papillary type II renal cell carcinoma presenting as a pelvic mass: a case report and review of the literature.

We report a case of a 57 years old woman with a solitary mass located in the pelvis diagnosed as an extrarenal papillary renal cell carcinoma, in the absence of a primary renal cancer. The diagnosis was based on cytomorphological features and further confirmed by immunochemistry findings following surgical excision. The hypothesis of a tumor developing in a supernumerary or ectopic kidney was excluded, since no normal renal tissue could be identified in the specimen and in the preoperative computed tomography and MRI images.

Large cystic lymphangioma of the pancreas: unusual finding with differential diagnosis and therapeutic considerations.

Lymphangiomas are rare benign tumours of lymphatic vascular origin. They are more common in the paediatric population and manifest mainly in the neck and axillary region. Retroperitoneal lymphangiomas are <1% and pancreatic origin is even rarer.

Primary adrenal Ewing sarcoma: A systematic review of the literature.

Background: Ewing sarcoma (ES) is a malignant neoplasm of neuroectodermal origin and is commonly observed in children and young adults. The musculoskeletal system is the main body system impacted and ES is rarely seen in the visceral organs particularly the adrenal gland.

Aim: To present a comprehensive review of primary adrenal ES, with emphasis on diagnosis, therapy and oncological outcomes.