Cellular pseudosarcomatous fibroepithelial stromal polyp of the renal pelvis

Cellular pseudosarcomatous fibroepithelial stromal polyp is an underrecognized lesion described in the lower female genital tract. We here report the clinical, histological, and immunohistochemical features of a cellular pseudosarcomatous fibroepithelial stromal polyp located in the renal pelvis. A...

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Bibliographic Details
Published in:APMIS : acta pathologica, microbiologica et immunologica Scandinavica microbiologica et immunologica Scandinavica, 2005-01, Vol.113 (1), p.70-4
Main Authors: PARADA, DAVID, MOREIRA, OTTO, GLEDHILL, TERESA, LUIGII, JUAN C., PÁEZ, ALBERTO, PARDO, MANUEL
Format: Article
Language:English
Subjects:
Cell Nucleus - metabolism
Desmin - metabolism
Female
Fibroepithelial polyp
Humans
Immunohistochemistry
Keratin-7
Keratins - metabolism
Kidney Neoplasms - diagnostic imaging
Kidney Neoplasms - physiopathology
Middle Aged
Neoplasms, Fibroepithelial - diagnostic imaging
Neoplasms, Fibroepithelial - physiopathology
Polyps - diagnostic imaging
Polyps - physiopathology
pseudosarcoma
Receptors, Progesterone - metabolism
renal pelvis
Stromal Cells - pathology
Ultrasonography
Vimentin - metabolism
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Summary:Cellular pseudosarcomatous fibroepithelial stromal polyp is an underrecognized lesion described in the lower female genital tract. We here report the clinical, histological, and immunohistochemical features of a cellular pseudosarcomatous fibroepithelial stromal polyp located in the renal pelvis. A 47‐year‐old woman was referred with a 4‐month history of left flank pain and gross hematuria. Left radical nephrectomy was performed. Gross pathological examination showed irregular pedunculated polypoid masses that had developed from the renal pelvis. Histologically, spindle cells with a patternless appearance were seen. The cells were of different sizes and had discernible cytoplasmic bipolar processes. Atypical stromal cells and atypical mitoses were also found. This case represents a typical cellular pseudosarcomatous fibroepithelial stromal polyp, probably developing from a reactive hyperplastic process involving the subepithelial stroma.
ISSN:0903-4641
1600-0463
DOI:10.1111/j.1600-0463.2005.apm1130111.x