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Subxiphoid Versus Unilateral Video-assisted Thoracoscopic Surgery Thymectomy for Thymomas: A Propensity Score Matching Analysis.
Annals of Thoracic Surgery 2022 May
BACKGROUND: The appropriate approach for video-assisted thoracoscopic surgery for early stage thymoma remains unclear. The present study aimed to explore the safety and feasibility of subxiphoid and subcostal arch thoracoscopic thymectomy in comparison with unilateral thoracoscopic thymectomy for treatment of early stage thymoma.
METHODS: The outcomes of 237 patients without myasthenia gravis who had undergone thoracoscopic thymectomy for Masaoka stage I and II thymoma from January 2015 to May 2019 at our center were retrospectively evaluated (subxiphoid and subcostal arch approach, 39; unilateral video-assisted thoracoscopic surgery approach, 198). A propensity score matching analysis was generated to control for selection bias due to nonrandom group assignment in a 1:1 manner.
RESULTS: There was no surgery-related mortality in included patients. Matching of patients according to propensity score resulted in a cohort that consisted of 39 patients in both groups. Patients had similar clinical characteristics in both groups. Compared with patients in the unilateral group, patients in the subxiphoid group yielded lower pain scores at 24 and 72 hours after operation, respectively (P < .01). In addition, the operation time was longer in the subxiphoid group (147.5 ± 43.6 vs 93.2 ± 33.8 minutes, P < .01). There were no significant differences in blood loss, total volume and time of drainage, complications, or postoperative hospital stays between the two groups.
CONCLUSIONS: Subxiphoid and subcostal arch thoracoscopic thymectomy for early stage thymoma appears to be a safe and feasible procedure. It is considered to be less invasive as it may cause minimal postoperative pain compared with the unilateral video-assisted thoracoscopic surgery approach.
METHODS: The outcomes of 237 patients without myasthenia gravis who had undergone thoracoscopic thymectomy for Masaoka stage I and II thymoma from January 2015 to May 2019 at our center were retrospectively evaluated (subxiphoid and subcostal arch approach, 39; unilateral video-assisted thoracoscopic surgery approach, 198). A propensity score matching analysis was generated to control for selection bias due to nonrandom group assignment in a 1:1 manner.
RESULTS: There was no surgery-related mortality in included patients. Matching of patients according to propensity score resulted in a cohort that consisted of 39 patients in both groups. Patients had similar clinical characteristics in both groups. Compared with patients in the unilateral group, patients in the subxiphoid group yielded lower pain scores at 24 and 72 hours after operation, respectively (P < .01). In addition, the operation time was longer in the subxiphoid group (147.5 ± 43.6 vs 93.2 ± 33.8 minutes, P < .01). There were no significant differences in blood loss, total volume and time of drainage, complications, or postoperative hospital stays between the two groups.
CONCLUSIONS: Subxiphoid and subcostal arch thoracoscopic thymectomy for early stage thymoma appears to be a safe and feasible procedure. It is considered to be less invasive as it may cause minimal postoperative pain compared with the unilateral video-assisted thoracoscopic surgery approach.
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