title: An exceptional minute tumour incidentally found in a renal biopsy.
abstract: Pathological analysis of renal biopsies performed to investigate a nephrological disease may exceptionally reveal incidental tumours, in addition to expected glomerular, tubulointerstitial or vascular pathology. We present the first case to date of a minute angiomyolipoma (AML), found incidentally in a renal biopsy specimen, performed in the assessment of proteinuria. AML is an uncommon kidney tumour, composed of a variable proportion of adipose tissue, spindle and epithelioid smooth muscle cells. Immunohistochemistry is mandatory for a definitive diagnosis, showing a specific perivascular epithelioid differentiation. The diagnosis of renal AML justifies the search for tuberous sclerosis-associated tumours.
authors.affiliation: Department of Pathology, CHU Lille, F-59000 Lille, France. buob.david@gmail.com
authors.forename: David
authors.initials: D
authors.lastname: Buob
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Copin
authors.forename: Thierry
authors.initials: T
authors.lastname: Perez
authors.forename: Eric
authors.initials: E
authors.lastname: Hachulla
authors.forename: Marc
authors.initials: M
authors.lastname: Hazzan
authors.forename: Xavier
authors.initials: X
authors.lastname: Leroy
mesh_terms: D018207:Angiomyolipoma / Q000175:diagnosis*; D001706:Biopsy; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D007674:Kidney Diseases / Q000601:surgery*; D008875:Middle Aged