Diffuse minute clear cell proliferation in kidney: case report and review of literature.
To our knowledge, diffuse involvement of renal parenchyma by multiple minute foci of clear cell proliferations has not been previously reported. We report such a case, found incidentally, in an 86-year-old woman who had undergone right ureteronephrectomy for pyeloureteral urothelial carcinoma. Macroscopy of the kidney showed numerous yellow dot-like cortical nodules less than 0.3 cm. Histologic examination of the kidney and nodules revealed innumerable foci of minute clear cell proliferations in a background of chronic pyelonephritis. The benign or malignant nature of those clear cell microtumors was investigated by immunohistochemistry and fluorescent in situ hybridization analysis of chromosome 3p.
Pusztaszeri
Marc
M
Department of Pathology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland. Marc.Pusztaszeri@chuv.ch
Tornillo
Luigi
L
Bouzourene
Hanifa
H
D000369:Aged, 80 and over; D049109:Cell Proliferation; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology*