Un « vrai faux-kyste » du pancréas révélant une vraie tumeur

Translated title of the contribution: Endocrine carcinoma of the pancreas revealed by a pseudocyst

Valérie Hervieu, Gilles Poncet, Pierre Jean Valette, Christian Partensky, Jean Yves Scoazec

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Abstract

Pancreatic pseudocysts are the most frequent cystic lesions of the pancreas. They always are associated with acute or chronic pancreatitis. We here report the case of a pseudocyst of the pancreas associated with obstructive chronic pancreatitis and diagnosed in a 47-year-old man without previous history of acute pancreatitis and without risk factor. The examination of the surgical specimen resulted in the incidental discovery of an obstructive nodule of endocrine carcinoma, measuring 9 mm in diameter and located immediately at the contact of the pseudocyst. The tumor was ill limited and associated with metastatic spread in 2 peripancreatic lymph nodes. Immunohistochemical studies showed that 60% of tumor cells expressed serotonin. This case report underlines that the diagnosis of pseudocyst must be done much cautiously in patients without a clinical history of pancreatitis and without risk factor. In most cases, the lesion corresponds to a misdiagnosed cystic tumor. Even if the lesion actually corresponds to a pseudocyst, as in the present case, an unusual cause, and particularly, an obstructive tumor, must be searched for.

Translated title of the contributionEndocrine carcinoma of the pancreas revealed by a pseudocyst
Original languageFrench
Pages (from-to)401-405
Number of pages5
JournalAnnales de Pathologie
Volume22
Issue number5
Publication statusPublished - 1 Oct 2002
Externally publishedYes

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