Resumo

AHUALLI, Jorge; MENDEZ-URIBURU, Luis; RAVERA, María Laura  e  MENDEZ-URIBURU, Martín. Feocromocitoma quístico: a propósito de un caso. Rev. argent. radiol. [online]. 2008, vol.72, n.2, pp.177-180. ISSN 1852-9992.

Prevalence of pheochromocytomas at autopsy is 0.13% and these uncommon neoplasms account for only 0.1%-0.3% of cases of hypertension. The tumor is composed of chromaffin cells, wich are embryologically derived from the neuroectoderm. Pheochromocytomas are quite vascular lesions. However, they frequently manifest with focal or partial cystic degeneration. Total o subtotal cystic degeneration is not common. There have been several reports in the literature describing totally cystic tumors. It has been postulated that this cystic degeneration starts with intraparenchymal hemorrhage followed by necrosis; the areas of necrosis later undergo resorption. The cystic components of pheochromocytomas reflect this necrosis and liquefaction within the tumor.

Palavras-chave : Pheochromocytoma; Cystic; Adrenal.

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