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1篇 您的检索式:作者名="Marni Colvin"
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1Infiltrating adenocarcinoma arising in a villous adenoma of the anal canal显示文摘Primary neoplasms arising in the anal canal are relatively unusual.In particular, adenomas and adenocarcinomas are distinctly rare entities in this region.We describe an infiltrating, well-differentiated adenocarcinoma arising in a villous adenoma from the distal anal canal, in an otherwise healthy patient at low risk for gastrointestinal malignancy.This is the case of an octogenarian man with a several year history of hemorrhoids and intermittent rectal bleeding, more recently complaining of continuous hematochezia.Examination revealed a blood-covered pedunculated mass with a long stalk protruding from the anus.The lesion was amputated at the bedside.Microscopic evaluation revealed an infiltrating well-differentiated adenocarcinoma, arising from a villous adenoma.This was further evaluated under anesthesia and complete excision of distal anal tissue was performed.Our report is the f irst describing the possible malignant degeneration of a villous adenoma in the anal canal.Marni Colvin Aris Delis Erika Bracamonte Hugo Villar Luis R Leon Jr 2009World Journal of Gastroenterology2009,15,28:2
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