From which of the following renal oncocytoma arises ?
RENAL ONCOCYTOMA: Benign epithelial neoplasm Arises from the intercalated cells of collecting ducts. Associated with genetic changes : loss of chromosomes 1 and Y Gross appearance- tumors are tan colored ,relatively homogeneous, and well encapsulated with central stellate scar Microscopically- characterized by a plethora of mitochondria which gives them tan color and granular eosinophilic cytoplasm.
Loop of henle
Collecting duct
Proximal tubule
Bowman's capsule
Renal carcinoma