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Case Reports in Pathology
Volume 2013, Article ID 324538, 7 pages
http://dx.doi.org/10.1155/2013/324538
Case Report

A Rare Case with a Solitary Fibrous Tumour of the Colon and an Epithelioid Angiomyolipoma of the Kidney

1Center for Diagnostic Pathology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan
2Department of Pathology, Cho Ray Hospital, Ho Chi Minh City, Vietnam
3Division of Urology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan
4Women’s Oncology Center, Sanno Medical Center, Tokyo 108-8329, Japan

Received 27 June 2013; Accepted 17 July 2013

Academic Editors: O. Hes and M. M. Picken

Copyright © 2013 Thong Quang Pham et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Solitary fibrous tumour is a soft tissue tumour composed of a subset of fibroblast-like cells and frequently needs immunohistochemical staining for final diagnosis. Epithelioid angiomyolipoma is a variant of angiomyolipoma but characterized by the absence of both adipocytes and abnormal blood vessels. We introduce a very rare case with the combination of these two tumours. A Japanese female patient without significant symptom was hospitalized and operated due to multiple uterine leiomyomas. During the operation, the surgeons found another tumour attaching to serosa of sigmoid colon. This tumour was resected and interpreted as solitary fibrous tumour, suspicious of malignancy. After 13 months of treatment, she was hospitalized again due to hematuria. The doctors detected a tumour in her right kidney. After consultation, laparoscopic right nephrectomy was done. The pathological result of this tumour was epithelioid angiomyolipoma. This is the first report on this very rare combination of tumours with extensive immunohistochemical demonstration of both tumours. Hereby, we review clinical information and histopathological findings together with discussion on each tumour.