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Mucinous Adenocarcinoma of Anal Ducts
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±è¿Ï¼·/È«Àº°æ/¹Ú¹®Çâ/ÀÌÁß´Þ/Wan Seop Kim/Eun Kyung Hong/Moon Hyang Park/Jung Dal Lee
KMID : 0357919960300090843
Abstract
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Anal duct carcinoma is a rare tumor, and accounts for less than 5 percent of all anal
cancers, which typically present a long-standing perianal fistulas. Some authors suggest
that the fistulous tracts are congenital duplications of the lower end of the hind gut
lined by rectal mucosa which is prone to malignant change to mucinous adenocarcinoma.
It is usually a well differentiated mucinous (colloid) adenocarcinoma. The prognosis after
wide excision of the rectum is relatively good.
Since 1985, we have had three cases of anal duct carcinoma with well differentiated
mucinous adenocarcinoma involving the posterior wall of the anus. Two patients had a
long history of perianal fistula with mucinous discharge. There was no spread to the
regional lymph node except one patient who had regional lymph node metastasis, and
post-operative chemotherapy and radiation therapy were then given. All patients have no
evidence of any recurrent problem at 16 months to 3 years following the surgical
treatment. Because of their rarity and the failure of recognition at an early stage, we
are presenting three cases to emphasize the characteristic features of this insidious,
slow-growing carcinoma.
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Anal duct; Mutinous adenocarcinoma; Hindgut duplication; Perianal fistula;
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