[An exceptional carotid tumor]. / Une tumeur rare du glomus carotidien.

Carotid paraganglioma (CP) is a relatively rare neoplasm, most commonly located in the head and neck. It is a slow-growing tumor and there has been some debate on the optimal techniques of excision. We report herein the case of a 35-year-old woman who presented with an asymptomatic mass in the right side of the neck. The diagnosis of CP was confirmed by computed tomography and carotid angiography. This tumor was successfully removed surgically without complication. Throughout the description of this case, we analyze the clinical, radiological, pathological and therapeutic particularities of this entity.

[Intracerebral schwannoma: case report]. / Schwannome intracérébral: étude anatomoclinique d'une observation.

BACKGROUND AND PURPOSE: We report a well-documented case of intracerebral schwannoma, presenting as a cystic and solid parietal mass, arising in a 20-year-old woman. Possible mechanisms underlying the histogenesis of this rare lesion are discussed. METHODS: The clinical, radiological and pathological features are described. The relevant literature is reviewed. RESULTS: The patient presented seizures and elevated intracranial pressure. Neuroradiologic findings showed a right parietal lesion with cystic and tissular components, intensely enhanced after injecting intravenous gadolinium. The tumor was removed through a right parietal craniotomy. Histological and immunochemical features confirmed the diagnostic of intracerebral schwannoma. The patient is alive without progressive local disease or metastasis. The origin of intracerebral schwannomas has been the source of much controversy. The most popular hypothesis argues that these tumors arise from the proliferation of Schwann cells in the perivascular nerve plexii. CONCLUSIONS: Intracerebral schwannoma is an extremely rare benign tumor. About fifty cases have been reported. The importance of recognizing this tumor is stressed, particularly in younger patients, given its benign nature, radiological resemblance to other tumors and favorable response to resection without toxic treatment.

[Sclerosing hemangioma of the lung: a rare lesion with a difficult diagnosis]. / L'hémangiome sclérosant du poumon: une lésion rare et de diagnostic difficile.

Sclerosing hemangioma of the lung is a rare lesion described for the first time in 1956 by Liebow. We report a case in a 45 year-old woman who was admitted for exploration of chronic cough. The chest x-ray revealed a round opacity, well delimited in the left pulmonary parenchyma. Surgical resection enabled the histopathological diagnosis of sclerosing hemangioma. We review progress in our knowledge of the histogenesis and diagnosis of this tumor. Immunohistochemistry has been highly contributory although numerous points remain controversial.