A Case Report of Tubular Adenoma of the Appendix with Cecal Intussusception

Takashi Shiroko, Naoki Yokoo, Yasuhito Kitakado, Hisaya Azuma, Takami Fukui, Chihiro Tanaka, Takahiro Yoshida, Koichiro Hata, Katsuaki Ura and Kiyohisa Okamoto^*

Department of Surgery and Department of Pathology^*, Takayama Red Cross Hospital

A 55-year-old man was admitted to our hospital because of a positive occult blood test result in stool examination. Barium enema revealed several elevated lesions between the cecum and the transverse colon, and the biggest lesion, one with a stalk was in the bottom of the cecum. Endoscopic examination showed a dark-red tumor covered with mucus and a wide stalk in the cecum. After biopsy of a specimen, it was diagnosed as a tubular adenoma with moderate atypia (Group III). Ileocecal resection with lymph node dissection was performed, assuming a cecal polyp with low-grade malignancy. The tumor, 40×30 mm in size at the base of the appendix, was intussuscepting into the cecum like polyp type IV, in Yamada's classification. The tumor was diagnosed histologically as a tubular adenoma of the appendix. Benign tumors, especially tubular adenomas originating from the appendix, are rare. Only 14 cases, including ours, have been reported in Japan.

Key words
tubular adenoma of the appendix, intussusception of appendix

Reprint requests
Takashi Shiroko Department of Surgery, Takayama Red Cross Hospital3-11 Tenman-cho, Takayama City, 506-8550 JAPAN

Accepted
February 23, 2000

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