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KMID : 0371320110800000080
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Journal of the Korean Surgical Society
2011 Volume.80 No. 0 p.80 ~ p.84
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Desmoplastic small round cell tumor of the stomach mimicking a gastric cancer in a child
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Moon Suk-Bae
Hur Jung-Min
Koo Hong-Hoe
Suh Yeon-Lim
Shin Hyun-Baek
Seo Jeong-Meen
Lee Suk-Koo
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Abstract
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Intra-abdominal desmoplastic small round cell tumor (DSRCT) is a highly malignant tumor of uncertain histogenesis. Here we report a case of DSRCT involving the stomach, initially misdiagnosed as gastric cancer. A 12-year-old boy presented with upper abdominal pain developed 1 month prior. On gastroscopy, a 7-cm mass was noted involving the esophago-gastric junction to the fundus, and positron emission tomography showed multiple hot uptakes suggesting distant metastasis. Gastroscopic biopsy showed poorly differentiated malignant cells. We diagnosed as stage IV gastric cancer and treated with 6 cycles of chemotherapy. Laparotomy revealed a huge gastric mass along with peritoneal disseminations. Palliative proximal gastrectomy was performed. Pathological examination revealed transmural involvement of DSRCT, and t(11;22)(p12;q12) was demonstrated on fluorescence in situ hybridization test. The chemotherapeutic regimen was changed and the patient underwent 8 additional cycles of post-operative chemotherapy. The patient is now alive and the residual tumor shows no significant changes after chemotherapy.
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KEYWORD
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Stomach, Desmoplastic small round cell tumor, Children
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