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Ann Thorac Surg 1984;38:314-316
© 1984 The Society of Thoracic Surgeons

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Articles

Major Pulmonary Resection for Suspected but Unconfirmed Malignancy

Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, NC

^* Address reprint requests to Dr. Keagy, 108 Burnett-Womack Building 229H, Chapel Hill, NC 27514

Thoracotomy is not infrequently performed in patients with suspected pulmonary carcinoma but with no histological or cytological confirmation of malignancy. The intraoperative decision to proceed with major pulmonary resection (lobectomy or pneumonectomy) is difficult if a large or central lesion precludes total excisional biopsy. Incisional or needle biopsies violate the principles of good cancer surgery, and the results may be inconclusive if the tumor is missed and areas of associated inflammation or necrosis are sampled.

Between January 1, 1970, and December 31, 1980, 303 patients underwent thoracotomy for suspected but unconfirmed malignancy. One hundred twenty-two had a minor resection only, 79 had a major resection (lobectomy or pneumonectomy) after a diagnosis was established by frozen section, and 102 had a major resection without a definitive diagnosis of cancer. Carcinoma subsequently was found in 68% (69) of this group of 102 patients, and benign lesions were identified in the remaining 32% (33), all of whom underwent lobectomy. The diagnoses in these 33 patients included seven granulomas, three hamartomas, nine instances of tuberculosis, and fourteen instances of fibrosis, inflammation, or cystic degeneration. The 2 thirty-day operative deaths in this group of 102 patients occurred among the 69 with malignant disease; 1 died of hemorrhage following pneumonectomy and 1, of respiratory insufficiency after lobectomy. In all 303 patients, there was no difference in operative mortality (p < 0.01) between lobectomy (2%) and a lesser resection (1.6%).

In a patient with a suspicious but inaccessible pulmonary lesion, lobectomy can be performed safely without violating the principles of cancer surgery. This recommendation should probably not be extended to lesions requiring pneumonectomy, because of the increased rates of morbidity and mortality associated with that procedure.

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