Indications for Pulmonary Nodule Resection

Solid Nodules >8mm in Diameter

The American College of Chest Physicians recommends surgical diagnosis when the clinical probability of malignancy is high (>65%) 4, 5
Surgical resection is indicated when the nodule is intensely hypermetabolic by PET or markedly positive by another functional imaging test 4
The American College of Chest Physicians recommends thoracoscopy (VATS) as the approach to obtain a diagnostic wedge resection 4, 6
Nodules showing clear evidence of malignant growth on serial imaging should undergo nonsurgical biopsy and/or surgical resection unless specifically contraindicated 3
Malignant growth is best detected by comparing serial CT scans with all available prior studies, especially the initial scan 3

Part-solid nodules measuring >8mm with a solid component should be evaluated with PET, nonsurgical biopsy, and/or surgical resection if they persist beyond 3 months 7
Part-solid nodules measuring >15mm in diameter should proceed directly to further evaluation with PET, nonsurgical biopsy, and/or surgical resection 7
Consider sublobar resection for persistent ground-glass nodules (pGGNs) due to excellent long-term prognosis and low risk of local relapse 6
For pure ground-glass nodules >5mm in diameter, annual surveillance with chest CT for at least 3 years is recommended, with resection considered if they grow or develop a solid component 7

Video-assisted thoracoscopic surgery (VATS) is strongly preferred over open thoracotomy for pulmonary nodule resection 8, 6
Anatomical segmentectomy may be considered for nodules <2cm without nodal disease when preservation of functioning lung tissue is important 6

Intraoperative frozen section analysis is recommended to establish diagnosis 8
If malignancy is confirmed, proceed to completion lobectomy during the same anesthetic procedure 6
For patients unfit for lobectomy, consider anatomical segmentectomy 6

When a patient has a dominant nodule and one or more additional small nodules, each nodule should be evaluated individually 7
Curative treatment should not be denied unless there is histopathological confirmation of metastasis 7
Surgical resection should be considered when a fully informed patient prefers undergoing a definitive diagnostic procedure 4
For patients unfit for surgery with high probability of malignancy nodules, consider stereotactic ablative body radiotherapy (SABR) or radiofrequency ablation (RFA) if technically suitable 6

Small nodules (<8mm) generally do not require immediate resection and should be followed with appropriate surveillance 5
Nodules that decrease in size but do not disappear completely should be followed to resolution or lack of growth over 2 years before considering resection 3
The sensitivity of frozen section analysis is lower (87%) for nodules <1.1cm in diameter compared to larger nodules (94%) 8