Residual lung volume changes after thoracoscopic lobectomy and segmentectomy based on 3D-CT: a retrospective...

Area of Science:

• Thoracic surgery
• Pulmonary function
• Medical imaging

Background:

• Three-dimensional CT (3D-CT) allows quantitative assessment of lung volumes post-anatomical resection.
• The relationship between postoperative lung compensation patterns and specific operation types is not well understood.

Purpose of the Study:

• To investigate how postoperative lung volume compensation patterns differ based on the type of anatomical resection.
• To analyze the association between operation type and ipsilateral lung volume changes after resection.

Main Methods:

• Retrospective cohort study of 124 patients.
• Quantification of preoperative and postoperative lung volumes using 3D-CT.
• Statistical analysis including multivariable models and FDR adjustment for age, sex, BMI, and smoking.

Main Results:

• Overall, a modest decrease in total lung volume was observed postoperatively.
• Left-lower lobe resections showed significantly greater ipsilateral volume loss after lobectomy versus segmentectomy.
• Partial compensation was noted on the operated side, with near-preservation on the contralateral side.

Conclusions:

• Lung volume compensation patterns are side-dependent and influenced by the choice of surgical procedure (lobectomy vs. segmentectomy) in certain cases.
• These findings are hypothesis-generating due to the retrospective design and small subgroups, requiring prospective validation.