[Etiologies of 1 173 hospitalized cases with adrenal incidentaloma].
OBJECTIVE
To summarize the characteristics of etiological distribution of adrenal incidentaloma during the past 20 years.


METHODS
All the relevant data of adrenal incidentaloma patients admitted into Chinese PLA General Hospital between January 1993 and January 2013 were collected. Their gender ratio, visiting ages and final diagnoses were retrospectively analyzed.


RESULTS
There were 1 173 patients were collected, of which, 629 (53.62%) males and 544 (46.38%) females with a mean age of (50.84 ± 12.13) years. There were 669 (57.03%) hypertensive cases and 622 cases undergone adrenalectomy. Routine medical checkup and abdominal discomfort led to the discovery of adrenal incidentalomas. As to the etiologies, there were non-functional tumors (n = 809, 68.97%), pheochromocytoma (n = 137, 11.68%), primary aldosteronism (n = 84, 7.16%) and adrenal Cushing syndrome (n = 65, 5.54%). The proportions of adrenal cortical carcinomas and metastases were 1.70% (n = 20) and 1.36% (n = 16) respectively. Compared with normotension group, the proportion of non-functional lesions in hypertension group was significant lower (73.81% vs 65.32%, P < 0.05) while the proportions of primary aldosteronism and adrenal Cushing syndrome were higher (11.96% vs 0.79%, 5.83% vs 5.18%, both P < 0.05).


CONCLUSIONS
Adrenal incidentaloma patients with concurrent hypertension is quite common. In respect of etiologies, non-functional tumor is the most common and followed by pheochromocytoma and primary aldosteronism Cushing syndrome.
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Lele
L
Li
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China. Email: jingtaodou@sohu.com.
Jingtao
J
Dou
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Weijun
W
Gu
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Guoqing
G
Yang
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Jin
J
Du
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Lijuan
L
Yang
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Li
L
Zang
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Xianling
X
Wang
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Nan
N
Jin
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Jinzhi
J
Ou-Yang
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Zhaohui
Z
Lü
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Jianming
J
Ba
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Yiming
Y
Mu
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Juming
J
Lu
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Jiangyuan
J
Li
Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China.
Changyu
C
Pan
D000310:Adrenal Gland Neoplasms / Q000175:diagnosis* / Q000209:etiology*; D000328:Adult; D005260:Female; D006801:Humans; D033162:Incidental Findings; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies