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15.07.2016 | Endocrine Tumors | Ausgabe 12/2016

Annals of Surgical Oncology 12/2016

Comparison of Learning Curves for Retroauricular and Transaxillary Endoscopic Hemithyroidectomy

Zeitschrift:
Annals of Surgical Oncology > Ausgabe 12/2016
Autoren:
MD Doh Young Lee, MD Dong Ju Oh, MD Ka Ram Kang, MD Min-Su Kim, MD Kyoung Ho Oh, MD, PhD Seung-Kuk Baek, MD, PhD Soon-Young Kwon, MD, PhD Jeong-Soo Woo, MD, PhD Kwang-Yoon Jung

Abstract

Objective

This study aimed to evaluate and compare learning curves for the retroauricular (RA) and transaxillary (TA) approaches in endoscopic hemithyroidectomy.

Methods

The medical records of 290 patients who underwent hemithyroidectomy by either the RA or TA approach from November 2007 through December 2015 were retrospectively reviewed (113 patients with RA and 177 with TA). The two groups were compared with regard to patient characteristics, perioperative clinical results, and complications. Learning curves for the two approaches were compared based on the number of cases required to reach a consistent operation time and drainage amount.

Results

Age at diagnosis, tumor size and location, and thyroid size were not significantly different between the two approach groups. Multiplicity and extrathyroid extension were more prevalent in the RA approach (p = 0.048 and 0.020, respectively). Operation time and hospital day were significantly shorter in the RA approach (p < 0.001 and p = 0.030), while postoperative bleeding was less common in the TA approach (p = 0.021). Operation time and drainage amount stabilized after 50 cases for RA and 90 cases for TA. Additionally, operation time, amount of drainage, hospital stay, and complication rates significantly decreased after stabilization of the learning curve. When comparing the two approaches before stabilization, postoperative bleeding was more frequent in the RA approach (p = 0.044), while no difference was observed after stabilization.

Conclusions

The RA approach seems to be beneficial for reducing operation time and hospital stay, and for stabilization of the learning curve. Postoperative bleeding should be considered during the period of early experience for the RA approach.

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