Objective: This study was designed to evaluate the clinical and pathological characteristics of adrenal masses. Methods: The clinical data of 249 cases of adrenal masses which were confirmed at operation and by pathology were analyzed. Results: The series comprised 103 males and 146 females. Overall, females were more commonly represented than males, especially with Cushing’s syndrome and typical pheochromocytoma (female:male ratio 3.3:1.9), however the prevalence of adrenal incidentalomas (AIs) in males and females was similar. In our series, 148 (59.4%) were symptomatic, of which 4 (2.7%) were malignant, and 101 (40.6%) were incidental, of which 20 (19.8%) were malignant. Hormonal work-up demonstrated that 30.3% of the AIs were functional. Of 109 adrenocortical adenomas, 47 were primary aldosteronism, 31 were Cushing’s syndrome, 30 were AIs, and 1 was adrenal virilization. Of 72 benign pheochromocytomas, 51 were typical pheochromocytomas and 21 were AIs. Of 14 adrenal nodular hyperplasias, 6 were Cushing’s syndrome and 8 were primary aldosteronism. Of the remaining 30 benign tumors, all presented as AIs. The diameter of malignant tumors (10.9 ± 5.6 cm) was significantly larger than that of benign tumors (4.5 ± 3.7 cm) (p < 0.001). Conclusion: This study shows a high rate of AIs in patients with adrenal masses selected for surgery. Hormone levels should be determined in symptomatic or incidental patients with adrenal masses. Imaging examination (CT and MRI) is the first method used to detect and localize adrenal masses. Tumor size is an important parameter of diagnosis and management of patients with adrenal masses, especially AIs.

Keywords:
Adrenal tumors, clinical analysis, Adrenal masses, surgery, Incidentalomas
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© 2010 S. Karger AG, Basel
2010
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