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Vol.40 No.6 contents | Japanese/English |
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- Original Article -
Extended Radical Segmentectomy for Small Peripheral Non-small Cell Lung Cancer 2 cm or Less in Diameter on Computed Tomography
Yoshinori Kusajima, Masataka Segawa, Hiroyuki Nakamura*, Eiiti Simasaki** and Katsuhiko Saito**Department of Thoracis and Vascular Surgery, *Department of Respiratory Disease, **Department of Pathology, Toyama City Hospital, Toyama, Japan
Objective: We prospectively assessed the usefulness of extended radical segmentectomy for peripheral non-small cell lung cancer 2 cm or less in diameter. Study Design: Retrospectively, 36 patients seen between 1984 and 1993, and who had peripheral non-small cell lung cancers 2 cm or less in diameter on resected specimens, who had undergone a lobectomy with hilar and mediastinal lymph node dissection, were examined for correlation between tumor location and intrapulmonary lymph node or parenchymal metastases histopathologically. The results suggested that extended radical segmentectomy with exploration of lymph nodes by intraoperative examination of frozen sections is acceptable for complete resection of small peripheral lung cancer. Based on those results, from 1993 to 1999, extended radical segmentectomy was prospectively performed for 28 patients with peripheral non-small cell lung cancer 2 cm or less in diameter on computed tomography. Results: The 5-year survival was 72.8% with the extended radical segmentectomy and 75.4% with the standard lobectomy. The frequency of recurrence in the extended radical segmentectomy group (p-Stage IA) was 3.7% and that in the standard lobectomy group (p-Stage IA) was 8.3%. No statistically significant difference between those two groups was detected. Postoperative pulmonary function tests showed that extended segmentectomy was superior to standard lobectomy in terms of recovery of pulmonary function. Conclusion: We concluded that an extended radical segmentectomy is as effective as standard lobectomy for treatment of small peripheral non-small cell lung cancer.
key words: Small peripheral lung cancer, Extended radical segmentectomy, Prognosis
Received: April 10, 2000
Accepted: July 31, 2000
JJLC 40 (6): 615-621, 2000
