A rare case with a solitary fibrous tumour of the colon and an epithelioid angiomyolipoma of the kidney.
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.
Center for Diagnostic Pathology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan ; Department of Pathology, Cho Ray Hospital, Ho Chi Minh City, Vietnam.
Thong Quang
TQ
Pham
Center for Diagnostic Pathology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan.
Shinsuke
S
Aida
Center for Diagnostic Pathology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan.
Ichiro
I
Mori
Division of Urology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan.
Takeo
T
Koshida
Division of Urology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan.
Takashi
T
Ohigashi
Women's Oncology Center, Sanno Medical Center, Tokyo 108-8329, Japan.
Katsuyoshi
K
Katase
Women's Oncology Center, Sanno Medical Center, Tokyo 108-8329, Japan.
Fumiyoshi
F
Murakami
Department of Pathology, Cho Ray Hospital, Ho Chi Minh City, Vietnam.
Thong Minh
TM
Tran
Center for Diagnostic Pathology, Mita Hospital, International University of Health and Welfare, Tokyo 108-8329, Japan.
Robert Y
RY
Osamura