The ultrastructural features of 3 cases of adrenocortical adenoma and 3 cases of pheochromocytoma were analyzed and correlated with clinical and pathological data.

• 通过对3例肾上腺皮质腺瘤和3例嗜铬细胞瘤的光镜和电镜观察,分析了这两种肿瘤的超微结构特点及电镜在其鉴别诊断中的作用。