title: Myxoid perineurioma in a transplanted kidney.
abstract: Perineuriomas are rare, benign peripheral nerve sheath tumors, most commonly found in the extremities and trunks. A handful of cases have been reported to arise from the retroperitoneum and in kidneys. To our knowledge, this is the first reported case of a myxoid perineurioma arising from a transplanted kidney. The patient is a 40-year-old Chinese male with end-stage kidney disease secondary to chronic sclerosing glomerulonephritis. He has a nonfunctioning renal graft in his right iliac fossa and a functioning graft in the left. Routine imaging found a mass in the nonfunctioning graft which was increasing in size. He underwent graft nephrectomy and histology revealed a myxoid perineurioma with no atypical features or malignancy.
authors: Department of Urology, Singapore General Hospital, Singapore. Electronic address: valerie.gan.h.l@sgh.com.sg.
authors: V H L
authors: VH
authors: Gan
authors: Department of Pathology, Singapore General Hospital, Singapore.
authors: W K
authors: WK
authors: Wan
authors: Department of Urology, Singapore General Hospital, Singapore.
authors: Y H
authors: YH
authors: Tan
mesh_terms: D000328:Adult; D006801:Humans; D007150:Immunohistochemistry; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology; D007680:Kidney Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D016030:Kidney Transplantation / Q000009:adverse effects*; D008279:Magnetic Resonance Imaging; D008297:Male; D009392:Nephrectomy / Q000379:methods; D018317:Nerve Sheath Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D051437:Renal Insufficiency / Q000601:surgery*; D016896:Treatment Outcome; D014463:Ultrasonography