肺癌伴发肾上腺嗜铬细胞瘤的临床及CT表现

目的：探讨肺癌伴发的肾上腺嗜铬细胞瘤的CT表现,提高对该病的诊断水平。方法：回顾性分析6例经手术病理证实的肺癌伴发肾上腺嗜铬细胞瘤患者的临床及CT表现。结果：6例肺部肿块均为周围型肺癌,3例合并有其他肺部慢性病变。肾上腺嗜铬细胞瘤6例均为单侧发生,1例有与嗜铬细胞瘤相关的内分泌症状,5例为无功能性肿瘤。肿瘤CT表现：类圆形肿块6个,呈分叶状2个;5例坏死、囊变;2例见液-液平;肿瘤长径2.5～14.0cm,平均约8.3cm;3例富血供,3例中等程度血供。结论：肺癌伴发的肾上腺嗜铬细胞瘤多为无功能性肿瘤,其较为特征性的CT表现是富血供、液-液平面及坏死囊变。

Clinical and CT manifestations of lung carcinoma associated with coincidental adrenal pheochromocytoma

Objective：To study the CT appearances of adrenal pheochromocytoma coincidentally associated with lung carcinoma,in order to improve the accuracy of diagnosis.Methods：The clinical and CT manifestations of 6 cases with surgery and pathology confirmed adrenal pheochromocytoma coincidentally associated with lung cancer were analyzed retrospectively.Results：All of the six patients had peripheral pulmonary carcinoma,3 had other chronic pulmonary lesions.All the 6 cases had a concurrent solitary adrenal pheochromocytoma,there was one case with endocrine symptoms related to pheochromocytoma,5 cases were non-functional.The CT findings of adrenal pheochromocytoma showed nearly round shape in 6 cases,lobulation in 2 cases,necrosis and cystic change in 5 cases,with fluid-fluid level in 2 cases.The average length of these tumors was 8.3 cm（ranged from 2.5~14.0cm）.Rich blood supply was found in 3 lesions and moderate in 3.Conclusion：Most of the coincidental adrenal pheochromocytoma associated with lung carcinoma were lack of endocrine symptoms.Some typical CT characteristics,such as rich blood supply,fluid-fluid level,necrosis,and cystic change could be assessed.