title: Papillary renal cell carcinoma. Report of two cases.
abstract: Papillary renal cell carcinoma is an uncommon variant of renal cell carcinoma which has unique features including hypovascularity or avascularity, extensive stromal macrophage infiltration and better prognosis than that for nonpapillary renal cell carcinoma. Two cases of papillary renal cell carcinoma presenting hypovascular or avascular angiology are presented. Histologically, the two tumors had a purely papillary structure. Papillae were lined by a layer of epithelial cells which lacked prominent cellular atypia, and there were numerous macrophages in the stroma. In addition, in one patient, extensive calcification of the tumor capsule was present. Furthermore, our experience in the present study with imprint cytology indicates that it offers corroborative information for the intraoperative diagnosis made on the basis of frozen section examination.
authors.affiliation: First Department of Pathology, Juntendo University, School of Medicine, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Matsumoto
authors.forename: T
authors.initials: T
authors.lastname: Iijima
authors.forename: N
authors.initials: N
authors.lastname: Kuwabara
authors.forename: Y
authors.initials: Y
authors.lastname: Wakumoto
authors.forename: T
authors.initials: T
authors.lastname: Fukushima
authors.forename: Y
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: R
authors.initials: R
authors.lastname: Kitagawa
authors.forename: K
authors.initials: K
authors.lastname: Takeda
authors.forename: Y
authors.initials: Y
authors.lastname: Oonuma
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
mesh_terms: D000328:Adult; D002114:Calcinosis; D002291:Carcinoma, Papillary / Q000473:pathology* / Q000601:surgery; D002292:Carcinoma, Renal Cell / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy