目的 研究不典型肺脓肿CT影像 学表现特征，提高临床上对不典型肺脓肿 的诊断率。方法 由我院影像科专业医师 对我院收治的30例不典型肺脓肿患者行CT 扫描资料进行回顾性分析。结果 30例患 者可分为三类：急性(9例)、慢性(11例) 和血行性肺脓肿(10例)；根据肺脓肿的发 展阶段的影像特征可划分为两种(肿块、 肺炎型)；CT征像：常规不典型肺脓肿影 像征象表示为边界清晰，空洞壁光滑完 整；肿块型影像征像表示为病灶四周有细 长毛刺征、棘突征和浅分叶征，淋巴结增 大或钙化，周围肺野清晰，肺炎型影像征 像表示为边缘模糊，存在粗条索状影，在 本次扫描中肺炎型在周围局部渗出性病灶 和胸膜厚度增加粘连多见。结论 脓腔是 否存在和病灶的周围出现渗出性变化是对 患者进行诊断和鉴别诊断的重要CT结果。

Objective To investigate the CT image performance characteristics analysis of atypical pulmonary abscess and improve diagnostic rate of atypical pulmonary abscess. Methods 30 cases with atypical pulmonary abscess in Imaging Department in our hospital were selected and retrospectively analyzed. Results 30 cases can be divided into three types: acute (9 cases), chronic (11 cases) and hematogenous lung abscess (10 cases), they can divided into two types (lump, pneumonia-like) according to development phase of pulmonary abscess, CT characteristics: Conventional atypical pulmonary abscess showed as clear boundary, the hole wall was smooth and full, mass-type image characteristics showed as: Around the lesions were slender burr, spinous process and shallow points leaves, lymph gland increased or calcified, surrounding lung field was clear, pneumonialike image feature showed as blurred edge, cord funicular shadow, in this scan, pneumonia-like was more seen in local exudative lesions and pleural thickness adhesion. Conclusion Vomica exists or not and exudative changes are important CT results on diagnosing and identifying diagnosis.