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J Thorac Cardiovasc Surg 1996;111:800-807
© 1996 Mosby, Inc.

GENERAL THORACIC SURGERY

COMBINED THORACOSCOPIC/LAPAROSCOPIC STAGING OF ESOPHAGEAL CANCER

Received for publication April 27, 1995 Revisions requested July 7, 1995; revisions received Oct. 9, 1995. Accepted for publication Oct. 31, 1995. Address for reprints: Mark J. Krasna, MD, Division of Thoracic Surgery, Box 167, University of Maryland Medical System, 22 S. Greene St. Rm. N4W87, Baltimore, MD 21201.

Abstract

Unlike mediastinoscopy in lung cancer, there exists no standard minimally invasive test to stage esophageal cancer. If it were possible to obtain exact preoperative staging in esophageal cancer, patients could be separated prospectively to receive neoadjuvant therapy appropriately. We studied the feasibility and efficacy of thoracoscopic and laparoscopic lymph node staging in esophageal cancer. Thoracoscopic staging was performed in 45 patients with biopsy-proven carcinoma of the esophagus. Laparoscopic staging was done in the last 19 patients. Thoracoscopic staging was aborted in three patients because of adhesions. Thoracic lymph node stage was N0 in 39 patients and N1 in three; celiac lymph nodes were normal in 13 and diseased in six. Esophageal resection was performed in 30 patients after thoracoscopic staging; 17 of these underwent laparoscopic staging. Thoracoscopic staging showed N0 lymph node status in 28 patients and N1 in two patients. Two of the 28 patients (7%) with N0 disease were found at resection to have paraesophageal lymph node involvement (N1); thus the disease was understaged by thoracoscopic staging. Thoracoscopic staging was accurate in detecting the presence of diseased thoracic lymph nodes in 28 of 30 cases (93%). Laparoscopic staging detected normal celiac nodes in 12 patients and diseased lymph nodes in five patients. After esophagectomy, the final pathology report in the 12 patients with N0 disease was N0 in 11 and diseased lymph nodes in one patient. Thus laparoscopic staging was accurate in detecting lymph node metastases in 16 of 17 patients (94%). Thoracoscopic and laparoscopic staging are more accurate than existing staging methods. Six of 19 patients in whom laparoscopic staging was used had unsuspected celiac axis lymph node involvement that had been missed by standard noninvasive techniques. One of three patients with thoracic lymph nodes and three of six with celiac lymph nodes were downstaged after preoperative chemotherapy/radiotherapy. The role of thoracoscopy and laparoscopy in staging esophageal cancer should be further evaluated in a multiinstitutional trial. (J THORACCARDIOVASCSURG1996;111:800-7)

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