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KMID : 0367420050480010112
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Journal of Korean Pediatric Society
2005 Volume.48 No. 1 p.112 ~ p.115
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A Case of Retroperitoneal Extrarenal Wilms’ Tumor with Metastasis to Lung and Bone
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Jeong Jae-Hun
Han Won-Cheol
Choi Du-Young
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Abstract
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Extrarenal Wilms’ tumor is a very exceptional tumor which is defined as Wilms’ tumor found anywhere other than in the kidneys. Until now less than 60 cases have been reported in the English literature. The tumor can be located in the retroperitoneum, inguinal canal, uterus, cervix, testes, skin and even in the thorax. The diagnosis is almost always made after surgical intervention. Distant metastasis of this tumor has only been reported in the case of a 6-year-old girl who developed Wilms’ tumor in the inguinal canal with lung involvement. In this paper we report a case of extrarenal Wilms’ tumor in retroperitoneum with distant metastasis to lungs, ribs and pelvic bone in a 6- year old male. The tumor was successfully removed without tumor cell spillage. The patient was diagnosed as favorable histologic group, in which the tumor consists of epithelial, blastemal and mesenchymal components without teratomatous elements. He received combination chemotherapy according to NWTS-IV guidelines and radiation to involved lungs, and has been alive and well for the last 6 months without severe complication or relapse.
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KEYWORD
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Extrarenal Wilms’ tumor, Retroperitonium
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