肺硬化性肺泡细胞瘤CT特征分析

Analysis of CT features of pulmonary sclerosing pneumocytoma

目的探讨CT检查在肺硬化性血管瘤中的诊断价值。方法回顾性分析30例经病理证实的肺硬化性血管瘤的CT表现。结果肿瘤发生于左肺20例,右肺10例。肿块多为单发,呈椭圆形、类圆形、不规则形、楔形或空洞样病灶。肿瘤最大直径1.01~9.05 cm,CT表现为肺内边界清楚的孤立性结节或肿块,增强呈中重度持续强化,强化均匀或不均匀,17例肿块内见斑点状钙化,2例伴肺门及纵隔淋巴结肿大。空气新月征3例,贴边血管征13例,尾征6例,晕征5例。结论肺硬化性血管瘤的CT表现具有一定特征性。典型CT特征有助于提高对该病的诊断及鉴别。

Objective To examine the diagnostic value of CT in pulmonary sclerosing pneumocytoma （PSP）. Methods The CT features of 30 pathologically confirmed PSP cases were analyzed retrospectively. Results Among all enrolled patients, 20 eases had left lung tumor, and 10 cases had right lung tumor. Most neoplasms were isolated lesions, with various shapes including round, oval, irregular and wedge shapes. Some tumors have cavities inside. The maximal tumor diameters ranged between 1. O1 cm and 9.05 cm. CT showed isolated pulmonary nodule or lump with a clear bounda- ry. Enhancement CT suggested medium to high level enhancement, which was either uniformed or non-uniformed. Besides, 17 cases also have calcification spots in the tumor tissue, and 2 case have lymphadenectasis in the hilus and mediastinum. Moreover, 3 cases had air crescent sign, 13 cases had enhanced edge visible vascular welt, 5 cases had halo sign, and 6 cases had tail sign. Conclusion The CT features of PSP are specific and typical CT signs can improve the diagnosis and differential diagnosis for PSP.