caa a22 4500 475753674 CHVBK 20180406123532.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s005950050620 doi (NATIONALLICENCE)springer-10.1007/s005950050620 Appendiceal intussusception induced by tubulovillous adenoma with carcinoma in situ: Report of a case [Elektronische Daten] [Masakazu Ohno, Takeshi Nakamura, Hiroshige Hori, Yoshiki Tabuchi, Yoshikazu Kuroda] 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 × 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. Springer-Verlag, 2000 appendiceal intussusception nationallicence tubulovillous adenoma nationallicence appendiceal cancer nationallicence Ohno Masakazu First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Nakamura Takeshi First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Hori Hiroshige First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Tabuchi Yoshiki Faculty of Health Science, Kobe University School of Medicine, 7-10-2 Tomogaoka, Suma-ku, 654-0142, Kobe, Japan aut Kuroda Yoshikazu First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Surgery Today Springer-Verlag 30/5(2000-05-01), 441-444 0941-1291 30:5<441 2000 30 595 https://doi.org/10.1007/s005950050620 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005950050620 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ohno Masakazu First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Nakamura Takeshi First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Hori Hiroshige First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Tabuchi Yoshiki Faculty of Health Science, Kobe University School of Medicine, 7-10-2 Tomogaoka, Suma-ku, 654-0142, Kobe, Japan aut NATIONALLICENCE 700 1- Kuroda Yoshikazu First Department of Surgery, Kobe University School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 773 0- Surgery Today Springer-Verlag 30/5(2000-05-01), 441-444 0941-1291 30:5<441 2000 30 595 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer