this type of tumor is distinguished from the other carcinomas of the kidney with light cytoplasm ( formerly called `` '' hypernephroid '' '' ) by ( a ) a positive hale 's iron colloid stain of the cytoplasm , ( b ) the occurrence of numerous invaginated vesicles within the cytoplasm that resemble the invaginated vesicles of intercalated cells of the collecting duct system , and ( c ) a positive immunoreaction of both the plasma membrane and the cytoplasm with antibodies to the epithelial membrane antigen ( ema ) and carbonic anhydrase c ( cac ) , respectively .
C2981607
type
C0007134
carcinomas of