Solid variant of papillary renal cell carcinoma with spindle cell and tubular components.
Summary of "Solid variant of papillary renal cell carcinoma with spindle cell and tubular components."
Abstract The solid variant of papillary renal cell carcinoma, when strictly defined as a tumor in which no true papillae can be identified, is extremely rare, with only a few cases reported in the literature. This tumor is characterized histologically by solid sheets of cells without true papillae; nevertheless, immunohistochemical and genetic analysis supports the classification of this tumor as a variant of papillary renal cell carcinoma. We report a case of solid variant of papillary renal cell carcinoma affecting a young man and provide histologic and clinical follow-up data, adding an additional case of this extremely rare pathology to the literature. In addition, we describe the first case, to our knowledge, of a solid variant of papillary renal cell carcinoma to contain a high-grade (sarcomatoid) spindle cell component.
This article was published in the following journal.
Name: Archives of pathology & laboratory medicine
Medical and Biotech [MESH] Definitions
Carcinoma, Renal Cell
A heterogeneous group of sporadic or hereditary carcinoma derived from cells of the KIDNEYS. There are several subtypes including the clear cells, the papillary, the chromophobe, the collecting duct, the spindle cells (sarcomatoid), or mixed cell-type carcinoma.
Carcinoma, Transitional Cell
A malignant neoplasm derived from transitional epithelium, occurring chiefly in the urinary bladder, ureters or renal pelves (especially if well differentiated), frequently papillary. Transitional cell carcinomas are graded 1 to 3 or 4 according to the degree of anaplasia, grade 1 appearing histologically benign but being liable to recurrence. (Stedman, 25th ed)
Carcinoma, Papillary, Follicular
A thyroid neoplasm of mixed papillary and follicular arrangement. Its biological behavior and prognosis is the same as that of a papillary adenocarcinoma of the thyroid. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1271)
Von Hippel-lindau Disease
An autosomal dominant disorder caused by mutations in a tumor suppressor gene. This syndrome is characterized by abnormal growth of small blood vessels leading to a host of neoplasms. They include HEMANGIOBLASTOMA in the RETINA; CEREBELLUM; and SPINAL CORD; PHEOCHROMOCYTOMA; pancreatic tumors; and renal cell carcinoma (see CARCINOMA, RENAL CELL). Common clinical signs include HYPERTENSION and neurological dysfunctions.
Proto-oncogene Proteins C-met
Cell surface protein-tyrosine kinase receptors for HEPATOCYTE GROWTH FACTOR. They consist of an extracellular alpha chain which is disulfide-linked to the transmembrane beta chain. The cytoplasmic portion contains the catalytic domain and sites critical for the regulation of kinase activity. Mutations of the gene for PROTO-ONCOGENE PROTEINS C-MET are associated with papillary renal carcinoma and other neoplasia.
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