Villous Tumors of the Duodenum

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Abstract
Five cases of villous tumors of the duodenum are reported, all of which involve the ampulla of Vater. Three of the five lesions contained either infiltrating carcinoma or carcinoma in situ. Although preoperative endoscopic biopsy was performed on all tumors no malignancy was identified. Frozen sections done at the time of operation on the three patients with carcinoma also failed to identify malignancy. One patient underwent pancreaticoduodenectomy and four patients had local excision of the tumor. Three of the patients treated with local excision developed recurrence and two subsequently had pancreaticoduodenectomy. Because of the difficulty in making an accurate diagnosis and the chance of recurrence when local excision is employed, strong consideration should be given to pancreaticoduodenectomy as the initial form of treatment of these lesions.

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