肾上腺肿瘤的CT诊断

目的 讨论CT对肾上腺肿瘤的诊断价值。方法 回顾性分析50例经手术病理证实的各类肾上腺肿瘤，观察其CT征象，结合病理，提出诊断和鉴别诊断。结果 醛固酮腺瘤肿块小，细胞内富含脂质而密度低；皮质醇腺瘤肿块稍大，中等密度，嗜铬细胞瘤肿块较大，囊变及周围强化明显为其特征；肾上腺髓脂瘤为一种少见无功能性能上腺良性肿瘤，肿块大，内含低密度脂肪成分为其特征；肾上腺转移瘤表现多样，肿块大小不等，密度不均匀，主要依据原发肿瘤。神经节瘤及肾上腺皮质腺瘤CT表现光明显特异性，定性诊断较难，病理有一定特点。结论 CT对肾上腺肿瘤检出率高，在定性诊断有一定参考价值。本组诊断符合率为78％。

CT Diagnosis of adrenal tumors

Purpose To discuss the CT values in diagnosis of adrenal tumors. Methods In 50 cases with various kinds of adrenal tumors confirmed by pathology were analysed retrospectively. The diagnosis and differentiate diagnosis were made according to CT findings and pathological results. Results Aldosterone adenomas, smallin size and rich in lipid in cells, had low density while cortical adenomas were lightly bigger and had middle density. Pheochromocytmas were bigger and characterized with cystoid degeneration and remarkable peripheral enhancement. Adrenal medullary lipomas are rare adrenal nonfunctionary benign tumor, and are large in size and characteristic sign of lipoid component with low density. Adrenal metastases varied in size, CT density and manifestation, and the diagnosis were mainly based on premary tumors. Ganglioneuromas and adrenal cortical adeocarcinomas were no special CT findings, definite diagnosis were difficult, but there were certain characteristics in their pathological manifestations. Conclusion There are high detecting rate in adrenal tumors and certain reference value in qualitative diagnosis with CT.The coincidence rate of the diagnosis in this study is 78% .