肺良性透明细胞瘤于1963年由Liobow和Castleman首先报导,为一种少见的肺原发性肿瘤,肿瘤细胞浆内存有大量的糖原,为一有鉴别意义的表现,并由此而有“糖瘤”之称。其组织学与向肺移转的肾癌的透明细胞极相似。作者报告一例65岁男性患者,常规正侧位胸片发现右下肺有一直径2cm的球形肿块,密度均匀,边缘光滑锐利。胸透及断层均未见钙化、淋巴腺病和其它病变。患者嗜烟,无咳血、咳痰、发热及体重减轻症状。体检及化验未见异常。复习住院前21个月的胸片,已有病变,此期间病变直径扩大一倍。患者行右下肺叶切除。光学显微镜下为一实质性肿瘤结节,由透明的,胞浆丰富的多角形或长方形细胞构 Lung benign clear cell tumor was first reported by Liobow and Castleman in 1963 as a rare primary lung tumor with a large amount of glycogen present in the cytoplasm of the tumor as a discriminatory manifestation and hence a “ Sugar tumor ”said. Its histology is very similar to the clear cells of kidney cancer that metastasize to the lungs. The authors report a 65-year-old man with a regular posterior chest radiograph that found a 2 cm diameter, spherical mass in the right lower lung with uniform density and smooth edges. Chest thrombosis and no calcification, lymph node disease and other lesions. Patients smoke, no cough and blood, expectoration, fever and weight loss symptoms. Physical examination and laboratory tests showed no abnormalities. Chest radiographs of 21 months prior to hospitalization were reviewed, and lesions were doubled in diameter during this period. Patients underwent lower right lobectomy. Under the optical microscope is a substantial tumor nodules, from the transparent, abundant cytoplasm of polygonal or rectangular cell structure