局灶性机化性肺炎的CT表现及特征

CT Appearances and Characteristic Features of Focal Organizing Pneumonia

目的:探讨局灶性机化性肺炎的CT特点及诊断价值。方法:回顾性分析45例经手术病理证实的局灶性机化性肺炎的临床资料及CT表现。结果:45例按病灶形态分为结节型(16例)、肿块型(15例)、浸润型(8例)和实变型(6例)。CT表现:7例边缘清晰光整,10例呈锯齿样改变,12例见有细毛刺,8例边缘模糊,8例边缘呈不规则样。10例结节型和10例肿块型病灶行平扫加增强。结节型:病灶均匀强化3例,环状强化3例,不规则强化2例,不增强2例;肿块型:病灶均匀强化4例,环状强化3例,不规则强化2例,不增强1例。6例环状强化病灶内有液化坏死。16例病灶内见支气管充气征,12例见支气管血管束异常,20例病灶位于胸膜旁。结论:局灶性机化性肺炎CT表现多样,但有一定的特征性,CT诊断符合率较高。

Objective： To investigate CT features and value of diagnosis of focal organizing pneumonia （FOP）.Methods：CT scans and clinical recording of 45 patients with histologically proved focal organizing pneumonia were studied retrospectively. Results：45 cases could be classified into types of nodule （16 cases）, mass （15 cases） ,infiltration （8 cases）,consolidation （6 cases）. 7 cases had a smooth margin, 10 cases had a serrated margin, 12 cases had thin spicules,8 cases had a hazy border,8 cases had a irregular margin. 10 cases of nodule and mass leisons underwent nonenhancement and enhancement CT scan. 3 of 10 nodle lesions had a homogeneous enhancement,3 had a circular enhancement,2 had a inhomogeneous enhancement,2 had a nonenhancement. 4 of 10 mass lesions had a homogeneous enhancement,3 had a circular enhancement,2 had a inhomogcneous enhancement. Necrosis were seen in 6 circular enhancement cases. 10 cases had an air bronchogram.12 cases had an abnormal bronchovascular bundle. 20 cases located in peripheral lung parenchyma. Conclusion：The CT manifestations of focal organizing pneumonia is varied,but has some specific radiographic features which can make a correct diagnosis.