发生在脏层胸膜的纤维瘤是临床上极为少见的良性肿瘤，现遇见2例报告如下。例1，女，34岁，工人。体检时发现左肺上叶相当于舌段有6cm×6cm大小的块影，边缘光滑，密度均匀，肿块随咳嗽及呼吸而移动。患者无任何自觉症状，其它检查（包括化验室检查）均属正常。诊断为左肺上叶 Fibroid tumors that occur in the visceral pleura are extremely rare benign tumors. Two cases are reported below. Example 1, female, 34 years old, worker. On physical examination, the left upper lobe was found to be 6 cm x 6 cm in size, with a smooth edge and a uniform density. The mass moved with coughing and breathing. The patient did not have any symptoms, and other tests (including laboratory examinations) were normal. The diagnosis is left upper lobe