We describe a case of penile tuberculosis in a bull. The prepuce was thickened, firm and pale with multifocal to coalescent caseous nodules, and the inguinal and mesenteric lymph nodes were moderately enlarged. Lesions in the prepuce, penis and lymph nodes were characterized by multifocal to coalescent areas of caseous necrosis and marked granulomatous inflammation. Acid-fast bacilli were seen within necrotic foci and Langhans giant cells. Mycobacterium tuberculosis var. bovis was identified in inguinal lymph nodes by the polymerase chain reaction technique and by bacterial isolation. Although rare, tuberculosis should be considered in the differential diagnosis of granulomatous lesions in the genital tract of bulls.

我们描述了一头公牛的阴茎结核病例。包皮增厚、变硬、苍白，多灶性至聚结干酪样结节，腹股沟和肠系膜淋巴结中度肿大。包皮、阴茎和淋巴结病变的特征是多灶性至干酪样坏死和显着肉芽肿性炎症的融合区域。坏死灶和朗汉斯巨细胞内可见抗酸杆菌。结核分枝 杆菌变种 通过聚合酶链反应技术和细菌分离在腹股沟淋巴结中鉴定了牛。虽然罕见，但在公牛生殖道肉芽肿病变的鉴别诊断中应考虑结核病。