囊腔类肺癌CT特征分析

目的分析囊腔类肺癌的CT特征。方法回顾性分析经病理证实的24例囊腔类肺癌的CT表现。所有患者均接受平扫,其中4例同期接受增强扫描。结果 24例均为单发病灶。4例病灶CT表现为单纯囊腔,8例表现为囊腔伴周围磨玻璃密度影,7例表现为囊腔伴周围实性密度影,5例囊腔周围同时伴有磨玻璃及实性密度影;囊腔形态呈圆形或类圆形9例,不规则形15例;22例囊壁不光整,2例囊腔壁光整。4例接受CT增强扫描者囊腔周围实性密度影可见中度强化。13例囊腔内可见壁结节,20例囊腔内可见粗细不均的分隔;出现分叶征18例,毛刺征12例,血管集束征9例,胸膜凹陷征10例。结论囊腔类肺癌CT表现具有一定特征性,对囊腔及其周围CT表现进行综合分析有助于进一步明确诊断。

Analysis of CT features of lung cancer associated with cystic airspaces

Objective To analyze CT features of lung cancer associated with cystic airspaces. Methods CT manifestations of 24 patients with pathologically confirmed lung cancer associated with cystic airspaces were retrospectively analyzed. All patients underwent CT plain scanning,among them 4 patients underwent enhanced CT scanning simultaneously. Results Solitary lesion was found in all 24 patients, on CT images manifested as the simple cyst in 4, cyst surrounding with glass-density in 8, cyst surrounding with solid-density in 7, cyst surrounding with glass-and solid-density in 5 cases. The shape of cystic cavity was round or elliptic in 9 cases, irregular in other 15 cases. The wall of cystic cavity was irregular in 22 cases and regular in 2 cases. Moderate enhancement of solid density around the cyst was found in all 4 cases that underwent enhanced CT scanning. There were 13 cases with wall mural nodule, 20 cases with septum in the cyst, 18 cases with lobulation sign, 12 cases with speculation sign, 9 cases with vascular convergence sign and 10 cases with pleural indentation sign. Conclusion CT findings of lung cancer associated with cystic airspaces are specific characteristics. Comprehensive analysis of CT features inside and surrounding cyst cavity is helpful to definitive diagnosis.