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目的 :回顾性分析细支气管肺泡癌 (BAC)的CT表现。方法 :42例经病理证实的BAC ,根据CT表现分为结节型、实变型和多结节型 ,分别为 2 3、16和 3例 ;结合文献资料分析各型肺泡癌的CT征象。结果 :结节型BAC主要表现为 :肺外周 ( 95 7% )、分叶 ( 91 3 % )、毛刺 ( 6 9 6 % )、空泡征或细支气管气象 ( 6 5 2 % )、密度不均 ( 6 5 2 % )、胸膜牵引( 6 0 9% )和毛玻璃影 ( 5 2 2 % ) ;实变型BAC可为单叶 /段实变 ( 3 7 5 % )、多叶 /段实变 ( 6 2 5 % )、支气管气象 ( 87 5 % )、囊状影 ( 81 3 % )、毛玻璃影 ( 43 8% )和叶间胸膜膨出 ( 3 7 5 % ) ;多结节型BAC较少见 ,表现为中下肺野分布为主的弥漫性腺泡结节 ,部分见空泡。结论 :熟悉BAC各型CT征象 ,有利于提高诊断准确率
Objective : To retrospectively analyze CT findings of bronchioloalveolar carcinoma (BAC). Methods : Forty-two patients with pathologically confirmed BAC were divided into nodular, consolidation, and multinodular types according to CT findings, which were 2-3, 16 and 3 cases respectively. The CT signs of various types of alveolar carcinoma were analyzed with literature data. RESULTS: Nodular-type BAC mainly manifested as: pulmonary peripheral (95 7%), lobar (91. 3%), burr (69.6%), vacuoles, or bronchiovascular meteorology (625%), and no density. The average (6852%), pleural traction (60.9%) and frosted glass shadow (5.22%); solid-varying BAC can be single leaf/segment consolidation (37.5 %), multi-leaf/solid consolidation (62.5%), bronchial meteorology (87.5%), cystic shadow (81.6%), frosted glass shadow (43.8%), and pleural pleural bulge (3.75%); multinodular type BAC. Rare, manifested as diffuse acinar nodules dominated by the middle and lower lung fields, and partial vacuoles. Conclusion : Familiar with the CT signs of various types of BAC will help improve diagnostic accuracy