Journal of Pathology and Translational Medicine

Case Reports

Chromophobe Cell Renal Carcinoma: A report of 3 cases.: Me Sook Roh, Gi Yeong Huh, Seo Hee Rha, Heon Young Kwon, Sook Hee Hong; Korean J Pathol. 1996;30(7):616-622.

Abstract PDF: Chromophobe cell renal carcinoma is an uncommon variety of renal cell carcinoma first described in humans in 1985 by Thoenes and his colleagues. It is a distinct type of renal cancer presumably derived from the intercalated cells of the collecting duct system and exhibiting a better prognosis than other types of renal cell carcinoma. This type of renal cell carcinoma has not been reported in Korean literature. We experienced three cases of chromophobe cell renal carcinoma from surgical pathology files of Dong-A medical center. The patients were a 65-year-old female, a 54-year-old female, and a 50-year-old male who had 8.2x6 cm, 4x2.5 cm and 4.3x3.2 cm sized, yellowish gray, beige to tan colored masses in the kidneys, respectively. Microscopically, the tumor cells were arranged in sheets or nests with delicate intervening vasculature. The cells were voluminous, uniform in appearance and contained finely reticulated cytoplasms delineated by prominent cell borders. With Hale's iron colloid staining the cytoplasm showed positive reaction; with PAS staining the result was negative. Immunohistochemically, the tumor cells showed positive reaction for cytokeratin but negative for vimentin. Electron microscopy showed numerous small, round to oval cytoplasmic vesicles, 150-300nm in size. All the patients received only radical nephrectomy and survived without evidence of recurrence or metastasis during follow-up intervals ranging from 4 months to 5 years.

Fine Needle Aspiration Cytology of Collecting Duct Carcinoma of the Kidney: A Case Report.: Sang Yeop Yi, Kwang Gil Lee; Korean J Cytopathol. 1994;5(2):160-166.

Abstract PDF: Collecting duct carcinoma of the kidney is an unusual variety of renal carcinoma considered to arise from the epithelium of the collecting ducts. We recently experienced an case of fine needle aspiration cytology of collecting duct carcinoma of the kidney in a 17 year-old girl. The smear revealed many cellular clusters of ordinary papillary pattern, characterized by clumping of cells with nuclear overlapping, in a slightly necrotic background. The tumor cells had abundant delicate granular cytoplasm with some having vacuolation. The nuclei were only slightly pleomorphic with somethat coarse chromatin and one or more small nucleoli. Some nuclei showed irregular nuclear membrane and nuclear groove. A few polmorphs were also present.

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