title: Applications of thin needle aspiration biopsy in urology.
abstract: Percutaneous thin needle aspiration biopsy was done on 34 patients for better staging of malignant disease by study of opacified lymph nodes, on 12 patients to eliminate the possibility of a malignant etiology of ureteral obstruction and on 7 patients with potentially metastatic soft tissue or visceral lesions. Ideally, a positive biopsy should change subsequent patient management and may eliminate the need for an exploratory operation. A significant number of falsely negative results occur and, for this reason, a negative biopsy should not affect subsequent patient management.
mesh_terms: D001707:Biopsy, Needle; D005260:Female; D005833:Genital Neoplasms, Female / Q000473:pathology; D006801:Humans; D066298:In Vitro Techniques; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D009362:Neoplasm Metastasis; D009367:Neoplasm Staging; D014517:Ureteral Obstruction / Q000209:etiology; D014571:Urologic Neoplasms / Q000175:diagnosis* / Q000473:pathology