肾上腺肿瘤的CT诊断(附46例分析)

目的:探讨肾上腺肿瘤在CT上的表现特点,以提高对该部位肿瘤的认识。方法:收集46例肾上腺肿瘤,回顾分析CT特征,对照病理结果进行讨论。结果:46例中,皮质腺瘤21例,多数较小,边缘光滑,轻度强化;转移瘤7例,单侧或双侧,密度均匀或不均匀;嗜铬细胞瘤6例,肿块一般较大,密度不均,增强后实质部分强化明显;髓性脂肪瘤6例,瘤内脂肪组织为其特征;皮质腺癌3例,较大肿块,直径一般大于7 cm,密度不均;肾上腺囊肿2例,边缘光滑,均匀水样密度的囊性占位,增强扫描无强化;非何杰金淋巴瘤1例,双侧发生,软组织密度肿块,强化较均匀。结论:肾上腺肿瘤CT表现各有特征,结合临床表现和生化检查可作出较为正确的诊断。

CT diagnosis of adrenal tumors(46 cases analysis )

Objective:To discuss the CT features of adrenal tumors so as to improve the accuracy of diagnosis.Methods: To review and analyze 46 cases of CT findings of adrenal tumor which verified by pathology.Results:Among the 46 cases,adenoma was seen in 21 cases,the edge.was smoothly,and slight enhancement in most cases.Metastasis tumors(n=7) displayed as masses of homogeneous or heterogeneous density bilaterally or unilaterally.Pheochromocytoma(n=6) were big masses and were heterogeneous density on plain scans while showed marked enhancement on enhanced scans.Myeloipoma(n=6) presented as low density masses with fat contents.Adenocarcinoma(n=3) was larger mass more than 7cm and were heterogeneous density.Adrenal Cyst(n=2) demonstrated homogeneous water-like density without enhancement;Lymphoma of non-He Jiejin's(n=1) form was irregular mass and had soft tissue density mass with homogeneous enhancement.Conclusion: Adrenal tumors have certain characteristic CT signs,a combination of CT findings with clinical and laboratory data can usually provide correct diagnosis.