title: Epithelioid cell granulomas in urine cytology smears: Same cause, different implications.
abstract: Tuberculosis of the urinary tract is usually secondary to tuberculosis of the kidney. Multinucleated giant cell histiocytes, often with peripheral nuclei (Langhans' cells), may be identified. Acid-fast bacilli on smear or positive urine cultures confirm the diagnosis. Similar findings can also be seen in patients treated with Bacillus Calmette Guérin (BCG) for transitional cell carcinoma or after bladder surgery. Here, we present two cases showing epithelioid cell granulomas and multinucleated giant cells on urine cytology, and discuss the differentiating features on cytomorphology and their therapeutic implications.
authors.affiliation: Department of Cytopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Sandeep Kumar
authors.initials: SK
authors.lastname: Arora
authors.forename: Nalini
authors.initials: N
authors.lastname: Gupta
authors.forename: Raje
authors.initials: R
authors.lastname: Nijhawan
authors.forename: A K
authors.initials: AK
authors.lastname: Mandal
mesh_terms: D000283:Administration, Intravesical; D000970:Antineoplastic Agents / Q000008:administration & dosage; D001500:BCG Vaccine / Q000008:administration & dosage; D002295:Carcinoma, Transitional Cell / Q000188:drug therapy / Q000652:urine*; D003581:Cytodiagnosis; D015622:Epithelioid Cells / Q000473:pathology*; D006101:Granuloma, Giant Cell / Q000652:urine*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014376:Tuberculosis / Q000652:urine*; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy / Q000652:urine*; D014552:Urinary Tract Infections / Q000652:urine*
chemical_list: D000970:Antineoplastic Agents; D001500:BCG Vaccine