摘要患者男，52岁，因“劳累后呼吸困难2个月，发现皮肤结节1个月”于2016年5月就诊我院，皮肤结节病理及超声内镜引导下的经支气管镜针吸活检（EBUS-TBNA）淋巴结病理符合结节病，经糖皮质激素治疗后皮肤结节缩小消失，但纵隔淋巴结进行性增大，经验性抗结核治疗后病变吸收，最终诊断结节病合并结核感染可能性大，抗结核疗程18个月，随访5年病情稳定。

abstractsA 52-year old man was admitted to our hospital because of dyspnea on exertion for 2 months and subcutaneous nodules for 1 month. Chest enhanced CT showed bilateral hilar and mediastinal lymphadenopathy. Bronchial alveolar lavage fluid revealed a CD 4+/CD 8+ T cell subsets ratio of 4.3 and culture for acid-fast bacillus (AFB) was negative. The pathology of skin nodules and transbronchial needle aspiration biopsy guided by endoscopic ultrasound (EBUS-TBNA) revealed non-caseating necrotizing epithelioid granulomas with negative acid-fast bacilli staining and periodic acid-Schiff staining, which was compatible with sarcoidosis. The patient was diagnosed as sarcoidosis and glucocorticoid was administrated. The subcutaneous nodules were improved. However, the lymph nodes were enlarged instead of shrinking after 6-month therapy. The failure to respond to glucocorticoids raised the possibility of sarcoidosis complicated with tuberculosis infection. The patient received anti-tuberculosis therapy. Lymphadenopathy responded within 4 months, and there was complete regression after 18-month treatment. The patient was followed up for 5 years and repeated chest CT scan showed that the sizes of bilateral hilar and mediastinal lymph nodes were normal.