[Plexiform cervical neurofibroma: about a case].

Plexiform neurofibroma is a rare benign tumor of the peripheral nerves involving the conjunctiva cells of the perineurium. It is pathognomonic of neurofibromatosis type1 (NF1 or Von Recklinghausen disease). MRI is a great help in the diagnosis of this pathology.

[Rare digestive tumors: gastrointestinal stromal tumors (GISTs): about a case of small bowel location and literature review].

Gastrointestinal stromal tumors (GISTs) are a rare group of mesenchymal tumors mainly occurring in the gastrointestinal tract. Previously, GISTs were classified as smooth muscle tumors also known as leiomyomas, leiomyosarcomas or leiomyoblastomas. However, since the advent of immunohistochemistry, GISTs have been diagnosed on the basis of the identification of c-kit-positive cells.

[Mirizzi's syndrome: a rare cause of biliary tract obstruction: about a case and review of the literature].

Mirizzi's syndrome is a rare complication of chronic vesicular lithiasis with prevalence ranging from 0.7% to 1.4% among patients who have undergone cholecystectomy.