Primary @entity420 of the XXXX urinary bladder: histochemical, immunological and ultrastructural studies.

@entity1 @entity3071 @entity1494 @entity5 @entity1606 @entity3558 @entity420 @entity3737
Neoplastic and non-neoplastic tissue specimens from ten @entity1 with primary @entity1494 were examined. Most of these @entity5 were associated with either @entity1606 and/or with glandular metaplasia of the bladder epithelium. The @entity3558 produced by the neoplastic cells was PAS, @entity3737 , mucicarmine, PB/ @entity3071 /PAS, and RPB/KOH/PAS-positive. ABH isoantigens of these @entity5 were not always deleted. Ultrastructurally, the neoplastic cells resembled goblet cells. Their plasma membrane had numerous microvilli with prominent glycocalyx. Proliferation and attenuation of tight junctions were noted. The gap junctions were few and small. Two types of desmosomes were found. The ultrastructural features of the neoplastic cells were attributed in part to the malignant transformation and in part to the direction of their differentiation. We have not observed any distinctive morphologic, histochemical, immunologic or ultrastructural features that might be diagnostic for these @entity420 .
