Mixed epithelial and @entity703 (MESTK) is a rare @entity5 composed of epithelial and stromal cells. We report a rare male case with detailed clinicopathological data and follow-up information. The @entity1 presented with gross @entity811 . Computed tomography (CT) and magnetic resonance imaging study showed a 60 mm*40 mm @entity5409 with thickened septa and minimal contrast enhancement at the lower pole of the right kidney. The @entity1 underwent nephron sparing surgery (NSS). Intraoperative frozen section showed benign histological features without significant cytologic atypia and @entity4498 . By additional immunohistochemistry investigations, the epithelial component was positive for @entity5822 , high molecular weight cytokeratin, and @entity15529 . The stromal component showed strong positivity for @entity2277 and smooth-muscle actin. This case emphasizes that it is difficult to establish a precise diagnosis of MESTK preoperatively due to lack of any typical radiological features. Thus, intraoperative frozen section is of great clinical significance for NSS with preservation of kidney function. Additionally, regular follow-up is necessary for the MESTK with malignant potential.

Mixed epithelial and XXXX : report of a rare case and review of literature.

@entity1 :: ('9606', 'Species') :: ['patient'] @entity15529 :: ('7849', 'Gene') :: ['PAX-8'] @entity5409 :: ('MESH:D052177', 'Disease') :: ['cystic lesion'] @entity5 :: ('MESH:D009369', 'Disease') :: ['benign tumor'] @entity4498 :: ('OMIM:604588', 'Disease') :: ['mitosis'] @entity5822 :: ('3855', 'Gene') :: ['cytokeratin-7'] @entity2277 :: ('7431', 'Gene') :: ['vimentin'] @entity811 :: ('MESH:D006417', 'Disease') :: ['hematuria'] @entity703 :: ('MESH:D007680', 'Disease') :: ['stromal tumor of the kidney']
@entity703 :: (MESH:D007680,Disease) :: ['stromal tumor of the kidney']
