Fat-containing variant of solitary fibrous tumor (lipomatous hemangiopericytoma) arising on surface of kidney.
Fat-containing variant of a solitary fibrous tumor is a recently recognized benign soft-tissue tumor that usually affects the thigh and retroperitoneum. We report a 51-year-old woman with a fat-containing variant of a solitary fibrous tumor that is the first reported case involving a visceral organ. The tumor was well delineated and seemed to arise from the renal capsule, radiographically and macroscopically. The tumor microscopically mimicked a solitary fibrous tumor but exhibited focal aggregates of fat cells. A fat-containing variant of a solitary fibrous tumor involving the kidney should be distinguished from spindle cell carcinoma, angiomyolipoma, gastrointestinal stromal tumor, and cellular schwannoma.
Yamaguchi
Takehiko
T
Department of Pathology, Koshigaya Hospital, Dokkyo University School of Medicine, Koshigaya, Saitama, Japan. takehiko@dokkyomed.ac.jp
Takimoto
Toshiro
T
Yamashita
Takahisa
T
Kitahara
Satoshi
S
Omura
Minoru
M
Ueda
Yoshihiko
Y
D000273:Adipose Tissue / Q000473:pathology*; D014408:Biomarkers, Tumor / Q000032:analysis; D002292:Carcinoma, Renal Cell / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed
D014408:Biomarkers, Tumor