患者女,57岁。体检发现右肺门占位1个月。1个月前患者体检胸透发现右肺门处占位。病程中患者无发热,无咳嗽咳痰,无胸闷胸痛,无心慌心悸等不适。一般情况可,食欲睡眠可,大小便正常,体力体重无明显减轻。胸部正侧位示:右肺门区见一类圆形肿块影,边界光整(图1、2)。胸部CT示:右肺门区软组织肿块,边界清晰,密度均匀,CT值约为36 HU,大小约为40 mm×30 mm(图3、4),第7组淋巴结肿大,直径约为11 mm,平扫CT值约为28 Female patient, 57 years old. Physical examination found that the right hilar occupy 1 month. 1 month ago, chest X-ray examination of patients found right hilar occupy place. No fever during the course of the patient, no cough and sputum, chest tightness and chest pain, palpitation without heart palpitations and other discomfort. In general, appetite, sleep, normal urine, physical strength no significant reduction. The chest is the lateral position: the right hilar region to see a class of round mass, border finishing (Figure 1,2). Chest CT showed: right hilar soft tissue mass, clear boundary, uniform density, CT value of about 36 HU, the size of about 40 mm × 30 mm (Figure 3,4), Group 7 lymph nodes, a diameter of about 11 mm, CT scan value of about 28