A Malignant Rhabdoid Tumor Originating from the Small Intestine: A Case Report

Ryo Ohta, Masataka Oneyama, Yasumasa Takahashi, Yuichi Kawahara, Masaya Kitamura, Manabu Goto, Koji Sekikawa, Riki Okeda* and Seiichi Takenoshita**

Department of Surgery, Institute of Gastroenterology and Department of Pathology*, Kawasaki Saiwai Hospital
Department of Surgery II, Fukushima Medical University School of Medicine**

We report a case of laparoscopic surgery for a malignant rhabdoid tumor originating in the small intestine. A 74-year-old man admitted for ileus was found in abdominal computed tomography, magnetic resonance imaging and ultrasonography to have a tumor 5 cm in diameter at the small intestine. Long tube enterography showed an irregular stenotic mass at the jejunum. We diagnosed it as a tumor of the small intestine. Based on potential tumor invasion of the retroperitoneum, we conducted laparoscope-assisted partial resection of the small intestine. Histologically the tumor consisted of rhabdoid cells with homogeneous lateralized nuclei and acidophillic cytoplasm including microspheres. Immunohistochemical staining showed, the tumor cells to be positive for vimentin, cytokeratin, and EMA and negative for desmin, chromogranin, and SMA. We report this rare case of a malignant rhabdoid tumor originating from the small intestine.

Key words
malignant rhabdoid tumor, primary small intestinal tumor, laparoscopic surgery

Reprint requests
Ryo Ohta Department of Surgery, Institute of Gastroenterology, Kawasaki Saiwai Hospital
39-1 Miyakocho, Saiwaiku, Kawasaki, 212-0021 JAPAN

Accepted
September 24, 2008

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