title: Extended resections of non-small cell lung cancers invading the aorta, pulmonary artery, left atrium, or esophagus: can they be justified?
abstract: T4 tumors that invade the heart, great vessels, or esophagus comprise a heterogenous group of locally invasive lung cancers. Prognosis depends on nodal status; this relationship has been consistently demonstrated in many of the small series of extended resection. Current National Comprehensive Cancer Network guidelines do not recommend surgery for T4 extension with N2-3 disease (stage IIIB). However, biopsy-proven T4 N0-1 (stage IIIA) may be operable. Localized tumors with invasion of the aorta, pulmonary artery, left atrium, or esophagus represent a small subset of T4 disease. Acquiring sufficient randomized data to provide statistical proof of a survival advantage for patients undergoing extended resections for these neoplasms will likely never be possible.Therefore, we are left to critically analyze current documented experience to make clinical decisions on a case-by-case basis.It is clear that the operative morbidity and mortality of extended resections for locally advanced T4 tumors have significantly improved over time,yet the risks are still high. The indications for such procedures and the anticipated outcomes should be clearly weighed in terms of potential perioperative complications and expertise of the surgical team. Patients with T4 N0-1 have the best prognosis and with complete resection may have the potential for cure. The use of induction therapy and surgery for advanced T4 tumors may improve survival. Current data suggest that for tumors that invade the aorta, pulmonary artery,left atrium, or esophagus, resection should be considered in relation to multidisciplinary care.For properly selected patients receiving treatment at high volume, experienced centers, extended resections may be warranted.
authors.affiliation: Thoracic Surgery Section, Thoracic and GI Oncology Branch, CCR/NCI, National Institutes of Health, Building 10, 4-3942, 10 Center Drive, MSC 1201, Bethesda, MD 20892-1201, USA.
authors.forename: Emily S
authors.initials: ES
authors.lastname: Reardon
authors.affiliation: Thoracic Surgery Section, Thoracic and GI Oncology Branch, CCR/NCI, National Institutes of Health, Building 10, 4-3942, 10 Center Drive, MSC 1201, Bethesda, MD 20892-1201, USA. Electronic address: david.schrump@nih.gov.
authors.forename: David S
authors.initials: DS
authors.lastname: Schrump
mesh_terms: D001013:Aorta, Thoracic / Q000473:pathology*; D002289:Carcinoma, Non-Small-Cell Lung / Q000473:pathology / Q000601:surgery*; D004947:Esophagus / Q000473:pathology*; D006325:Heart Atria / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology / Q000601:surgery*; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D011013:Pneumonectomy / Q000379:methods*; D011651:Pulmonary Artery / Q000473:pathology*
keywords: Aorta; Esophagus; Extended resection; Left atrium; Non-small cell lung cancer; Pulmonary artery; T4