“…In general BML lesions have the same histological appearance as the initial uterine leiomyoma [4,12] . The histological differential diagnosis of pulmonary smooth muscle nodules includes BML, primary leiomyoma or leiomyosarcoma, metastatic leiomyosarcoma, pulmonary hamartoma, leiomyomatous hyperplasia and lymphangioleiomyomatosis [6,[13][14][15] , in which, however, the proliferating cells express HMB-45. Reported treatment methods include surgical resection of the nodules if possible, hysterectomy and bilateral oophorectomy, chemotherapy, progesterone and medical castration using luteinizing hormone-releasing analogue or the appropriate combination of them [2,8,16] .…”