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Conversion from thoracoscopic to open pneumonectomy is not associated with short- or long-term mortality.

Hue JJ, Linden PA, Bachman KC, Worrell SG, Gray KE, Towe CW. Conversion from thoracoscopic to open pneumonectomy is not associated with short- or long-term mortality. Surgery. 2020 Nov 1; 168(5):948-952.

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Abstract:

BACKGROUND: Thoracoscopic pneumonectomy commonly requires conversion to thoracotomy. We hypothesize that conversion would lead to worse short- and long-term outcomes compared with operations completed thoracoscopically. METHODS: The National Cancer Database identified patients who underwent a pneumonectomy from 2010 to 2016. Trends in conversion were described using linear regression. Multivariable regression of factors associated with conversion was performed. Short-term outcomes included duration of stay, number of lymph nodes harvested, margin status, readmission, and 90-day mortality. Long-term outcome was evaluated as overall survival. RESULTS: A total of 8,037 patients underwent a pneumonectomy. The rate of attempted thoracoscopic pneumonectomies increased from 11% to 22% (P < .001) and the rate of conversion decreased from 39% to 33% (P  = .011). On multivariable analysis, a greater patient comorbidity index and pathologic nodal-stage 2 disease were associated with an increased rate of conversion. The mean number of lymph nodes evaluated was greater as was the duration of stay in the conversion group, but conversion to open thoracotomy was not associated with positive surgical margins, readmission rate, 90-day mortality, or survival. CONCLUSION: Thoracoscopic pneumonectomy is performed with increasing frequency and decreasing conversion rate. Conversion is associated with a greater duration of stay but other short- and long-term outcomes are similar. This observation suggests minimal harm in conversion from minimally invasive to open pneumonectomy.




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