皮脂腺囊肿的CT诊断和病理对照研究

Comparative study of CT diagnosis and pathology of sebaceous gland cysts

目的:探讨CT诊断皮脂腺囊肿的价值。方法:回顾分析经手术、病理证实的15例皮脂腺囊肿的临床资料及CT表现。结果:皮脂腺囊肿位于皮肤和/或皮下脂肪层内,其皮面稍隆起并可见一蓝黑色点,囊肿呈圆形或椭圆形,边缘清楚,大小约6.5mm×6.7mm^51.3mm×96.3mm,囊内密度均匀或不均匀,CT值约-20HU^20HU,囊内有钙化时CT值可达300~400HU左右,囊壁较完整,壁清或欠清,壁厚约1~2mm;合并感染时囊壁模糊,囊内密度不均匀,周围脂肪密度增高。15例皮脂腺囊肿CT诊断和手术、病理诊断符合率100%。结论:皮脂腺囊肿有较典型的CT表现,结合临床资料,诊断符合率高,对皮脂腺囊肿的诊断具有重要价值。

Objective To evaluate the value of CT in the diagnosis of sebaceous cyst.Methods The clinical data and CT findings of 15 cases of sebaceous cyst confirmed by operation and pathology were retrospectively analyzed.Result The sebaceous gland cyst is located in the skin and/or subcutaneous fat layer,its skin surface is slightly raised and a blue black spot is seen,the cyst is round or oval,the margin is clear,the size is about 6.5mm×6.7mm^51.3mm×96.3mm,the inner density of the cyst is uniform or uneven.The CT value was about-20HU^20HU.When there was calcification in the capsule,the CT value could reach about 300~400HU,the wall of the capsule was intact,the wall was clear or not,and the thickness of the wall was about 1~2 mm.When complicated with infection,the wall of the capsule was blurred,the density of the capsule was not uniform,and the density of the surrounding fat was increased.15 cases of sebaceous gland cysts were diagnosed and operated by CT,and the coincidence rate of pathological diagnosis was 100%.Conclusion Sebaceous cyst has typical CT features,combined with clinical data,the diagnostic coincidence rate is high,which has important value in the diagnosis of sebaceous gland cyst.