A Case of Carcinoid Tumor of the Terminal Ileum 8 mm in Diameter with Lymph Node Metastasis

Masato Suzuoki¹⁾³⁾, Hohhei Hishiyama¹⁾, Yutaka Nakamura¹⁾, Kohji Taira¹⁾,
, Motoya Takeuchi¹⁾³⁾, Hiroyuki Hashimoto¹⁾³⁾, Masakatsu Ando²⁾, Satoshi Kondo³⁾ and Hiroyuki Katoh³⁾

Department of Surgery¹⁾and Pathology²⁾, Asahikawa Red Cross Hospital, Department of Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine³⁾

A 54-year-old man seen at another hospital for fecal occult blood was found by colonoscopy to have multiple colon polyps and a submucosal tumor 8 mm in diameter in the terminal ileum. A histological diagnosis of carcinoid was made from a biopsy specimen from the ileal lesion. After admission to our institution, we conducted ileocecal resection. Macroscopic findings for the resected specimen showed a submucosal tumor 8×7 mm in diameter in the terminal ileum. Histological findings showed the carcinoid tumor had deeply invaded the submucosal layer and resulted in a regional lymph node metastasis. Carcinoid tumors of the ileum are rare, with our case having the munimum diameter for lymph node metastasis in Japan. In the West, jejunoileal carcinoid tumors are common and about 20% less than 10mm in diameter involve regional lymph node metastasis. Patients with small ileal carcinoid tumors should thus be suitably treated to allow for the possibility of lymph node metastasis.

Key words
ileal carcinoid, ileal carcinoid lymph node metastasis

Reprint requests
Masato Suzuoki Department of Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8648 JAPAN

Accepted
January 30, 2002

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