Table 1.

A comparison of the basic characteristics between the two groups

	Overall	RLA	TLA	P value
No. of patients	78	41	37
Mean age (yrs)	46.59 ± 35.60	44.41 ± 38.90	47.92 ± 29.61	0.65
BMI (kg/m2)	23.58 ± 2.07	23.52 ± 2.46	23.60 ± 2.92	0.89
Tumor size (cm)	5.78 ± 1.29	5.81 ± 1.17	5.76 ± 1.34	0.86
Gender				0.90
Male	49	26	23
Female	29	15	14
Localization				0.79
Left	54	29	25
Right	21	11	10
Bilateral	3	1	2
Previous abdominal surgery	3	1	2	0.49
Resection				0.07
Total	44	27	17
Partial	34	14	20
Pathology				0.47
Adrenocortical hyperplasia	18	10	8
Aldosterone-producing adenoma	38	18	20
Adrenal medullary hyperplasia	3	1	2
Adrenal myelolipoma	1	1	0
Adrenocortical carcinoma	6	2	4
Adrenal cyst	3	3	0
Hematoma	1	1	0
Pheochromocytoma	8	5	3

BMI body mass index, RLA retroperitoneal laparoscopic adrenalectomy, TLA transperitoneal laparoscopic adrenalectomy