原发性肺淋巴瘤是结外淋巴瘤少见的类型,易误诊,现将我们经病理证实1例报道如下。患者,女,50岁,2个月前因活动后感胸闷气促,在外院经X线检查及CT扫描发现右上肺结节,左下肺肿块,经抗炎,抗结核治疗无明显疗效,而转来本所诊疗。体检:全身浅表淋巴结及肝脾不肿大,胸片示左下肺后段有一卵圆形肿块影,约8×5cm, Primary pulmonary lymphoma is a rare type of extranodal lymphoma and is often misdiagnosed. We have now reported one case of pathologically confirmed as follows. The patient, female, 50 years old, had chest tightness and shortness of breath after the activity 2 months ago. In the outer hospital, the right upper lung nodule and the left lower lung mass were found by X-ray examination and CT scan. The anti-inflammatory and anti-tuberculosis treatment had no obvious effect. Transfer to our clinic. Physical examination: The superficial lymph nodes and liver and spleen were not swollen. The chest radiograph showed an oval mass shadow in the posterior segment of the left lower lung, approximately 8×5 cm.