Appendiceal intussusception induced by tubulovillous adenoma with carcinoma in situ: report of a case

Appendiceal intussusception is an uncommon pathologic condition; however, villous adenoma of the appendix is a distinctly rare entity. We report herein a case of appendiceal intussusception induced by tubulovillous adenoma with carcinoma in situ. A 67-year-old man was admitted to our hospital with a...

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Bibliographic Details
Published in:Surgery today (Tokyo, Japan) Japan), 2000-01, Vol.30 (5), p.441-444
Main Authors: Ohno, M, Nakamura, T, Hori, H, Tabuchi, Y, Kuroda, Y
Format: Article
Language:English
Subjects:
Adenocarcinoma - diagnosis
Adenocarcinoma - surgery
Adenoma, Villous - diagnosis
Adenoma, Villous - surgery
Aged
Appendectomy
Appendix - pathology
Appendix - surgery
Carcinoma in Situ - diagnosis
Carcinoma in Situ - surgery
Cecal Neoplasms - diagnosis
Cecal Neoplasms - surgery
Follow-Up Studies
Humans
Intussusception - diagnostic imaging
Intussusception - etiology
Intussusception - surgery
Male
Neoplasms, Multiple Primary - complications
Neoplasms, Multiple Primary - diagnosis
Radiography
Treatment Outcome
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Summary:Appendiceal intussusception is an uncommon pathologic condition; however, villous adenoma of the appendix is a distinctly rare entity. We report herein a case of appendiceal intussusception induced by tubulovillous adenoma with carcinoma in situ. A 67-year-old man was admitted to our hospital with a 1-year history of lower abdominal pain for investigation. Barium enema showed a filling defect with an irregular surface in the cecum, and colonoscopy revealed a cecal tumor with a granular surface. Pathological examination of biopsy samples revealed tubulovillous adenoma with well-differentiated adenocarcinoma, and a diagnosis of cecal cancer in tubulovillous adenoma was made. Surgery was performed and the resected specimen was found to contain a tumor arising from the appendix. The tumor was 5.5 x 4.5 cm in size in the cecal cavity, and the appendix had invaginated into the cecum at its base. The cut surface of the appendix showed the villous tumor filling the appendiceal lumen and projecting into the cecal cavity. Microscopic examination revealed well-differentiated adenocarcinoma in tubulovillous adenoma. To the best of our knowledge, this is the first report of appendiceal intussusception caused by tubulovillous adenoma with carcinoma of the appendix.
ISSN:0941-1291
1436-2813
DOI:10.1007/s005950050620