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目的分析15例外围型小细胞肺癌(P-SCLC)的临床表现及CT征象,以提高对该病的认识和诊断能力。方法收集经手术或肺穿活检证实的15例P-SCLC的临床资料,回顾性总结分析其CT影像特征。结果根据原发灶及转移范围的CT表现分为4型:Ⅰ型,孤立结节不伴转移,2例;Ⅱ型,原发灶伴转移未超过同侧肺门及纵隔淋巴结,7例;Ⅲ型,原发灶伴转移达两肺或有肺外转移,4例;Ⅳ型,原发灶伴癌性淋巴管炎累及1个以上肺叶,2例。结论CT能清楚显示P-SCLC原发灶的特征及转移范围,CT分型能为临床分期及制订治疗方案提供重要依据。
Objective To analyze the clinical manifestations and CT signs of 15 cases of peripheral small cell lung cancer (P-SCLC) so as to improve their understanding and diagnosis of this disease. Methods The clinical data of 15 cases of P-SCLC confirmed by surgery or lung biopsy were retrospectively analyzed and their CT features were analyzed retrospectively. Results The CT findings of the primary tumor and metastasis range were classified into 4 types: type Ⅰ, solitary nodules without metastasis, type Ⅱ with primary metastasis with no metastasis beyond hilar and mediastinal lymph nodes in 7 cases. Type Ⅲ, primary tumor with metastasis to two lungs or extrapulmonary metastasis, 4 cases; type Ⅳ, primary tumor with lymphangitis associated with more than one lung lobes, 2 cases. Conclusion CT can clearly show the characteristics of primary tumor and the extent of metastasis in P-SCLC. CT classification can provide important basis for clinical staging and treatment planning.