Table 2.

Major clinical series in robot-assisted thyroidectomy.

Authors	Subjects (no.)	Thyroidectomy type	Technique and approach	Operation time (min)	Tumor average size (cm)	Average hospital stay (days)	Complications (%)
Lee et al. [56]	15	Total = 14 Partial = 1	Bilateral axillo-breast with C02 insufflation	218	<1	3.5	NR
Kang et al. [51]	338	Total = 104 Partial = 234	Gasless transaxillary	144	0.8	3.3	Transient Hypocalcaemia = 41.3% transient RLN paresis = 3.8% Seroma formation = 1.7% permanent RLN injury = 0.8% hematoma formation = 0.6% horner's syndrome = 0.2% Transient brachial plexus neuropraxia = 0.2%
Tae et al. [55]	41	Total = 10 Partial = 31	Gasless axillo-breast and axillary	179	1.63	6.4	Transient hypocalcaemia = 20% seroma formation = 4.9% transient RLN paresis = 2.4%
Lee et al. [54]	1043	Total = 366 Partial = 677	Gasless transaxillary	132	0.8	2.9	Transient hypocalcaemia = 18.4% transient RLN paresis = 4.3% seroma formation = 2% chyle leakage = 1.2% permanent RLN injury = 0.5% hematoma formation = 0.5% tracheal injury = 0.3% transient brachial plexus neuropraxia = 0.3% horner's syndrome = 0.1%
Lee et al. [58]	580	Total = 135 Partial = 445	Gasless transaxillary	126 (partial) 151 (total)	0.58	3.3	Transient hypocalcaemia = 37.8% transient hoarseness = 3.3% permanent RLN injury = 0.7% seroma formation = 2.9% hematoma formation = 0.5% tracheal injury = 0.3% traction injury of ipsilateral arm = 0.2%

RLN, Recurrent Laryngeal Nerve; NR, not reported.