Video-Assisted Thoracic Surgery Lobectomy for Non-Small Cell Lung Cancer: Experience of 133 Cases

폐암에서의 흉강경 폐엽절제술 치험 133예

  • Kim, Hyeong-Ryul (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Cho, Jeong-Su (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Jang, Hee-Jin (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Lee, Sang-Cheol (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Choi, Eun-Suk (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Jheon, Sang-Hoon (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Sung, Soak-Whan (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital)
  • 김형렬 (분당서울대학교병원 흉부외과) ;
  • 조정수 (분당서울대학교병원 흉부외과) ;
  • 장희진 (분당서울대학교병원 흉부외과) ;
  • 이상철 (분당서울대학교병원 흉부외과) ;
  • 최은석 (분당서울대학교병원 흉부외과) ;
  • 전상훈 (분당서울대학교병원 흉부외과) ;
  • 성숙환 (분당서울대학교병원 흉부외과)
  • Published : 2009.10.05

Abstract

Background: We evaluated the feasibility and the efficacy of Video-Assisted Thoracic Surgery (VATS) lobectomy for treating patients with non-small cell lung cancer (NSCLC) and we compared the outcomes of VATS lobectomy with those of open lobectomy. Material and Method: From 2003 to March 2008, 133 NSCLC patients underwent VATS lobectomy. The patients were selected on the basis of having clinical stage I disease on the chest CT and PET scan. The outcomes of 202 patients who underwent open lobectomy (OL group) for clinical stage I NSCLC were evaluated to compare their results with those of the patients who underwent VATS lobectomy (the VL group). Result: The number of females and the number of patients with adenocarcinoma and stage IA disease were greater in VL group (p<0.05). There was no operative mortality or major complications in the VL group. Conversion to thoracotomy was needed in 8 cases (6%), which was mostly due to bleeding. The chest tube indwelling time and the length of the postoperative hospital stay were significantly shorter in the VL group (p<0.001). The number of dissected lymph nodes and the size of tumor were significantly smaller in the VL group (p<0.001). For the pathologic stage I patients, there was no significant difference in the three-year survival rates between the two groups (p=0.15). Conclusion: VATS lobectomy is a safe procedure with low operative mortality and morbidity. VATS lobectomy is feasible for early stage NSCLC and it provides outcomes that are comparable to those for open lobectomy. Further long-term data are needed.

배경: 흉강경 수술이 점차 확대되고 있으며 폐암에서의 적용도 늘어나고 있다. 본 연구에서는 폐암 환자에서 시행한 흉강경 폐엽절제술의 안정성을 평가해보고, 개흉 폐엽절제술과의 성적과 비교해 보았다. 대상 및 방법: 2003년 5월부터 2008년 3월까지 임상적 I기 폐암으로 흉강경 폐엽절제술을 시행 받은 133명과 개흉 폐엽절제술을 시행받은 202명을 후향적으로 분석하였다. 임상적 I기 폐암은 수술전 컴퓨터단층촬영과 양성자방출단층촬영 등을 포함한 진단 방법으로 결정되었다. 흉강경 폐엽절제술은, 초기에는 장경 3 cm 미만, 2006년 이후에는 $4{\sim}5\;cm$의 병변까지 확대하였으며, 2개 혹은 3개의 포트와 늑골 벌림 없는 $3{\sim}6\;cm$의 작업창을 이용하였다. 병리학적으로 I기로 확진된 환자들을 2009년 2월까지 추적관찰하여, 흉강경 폐엽절제술군과 개흉 폐엽절제술군의 생존률과 무병생존률을 비교하였으며, 흉강경 수술 중 개흉술로 전환한 8명은 양군의 비교분석에서 제외되었다. 결과: 흉강경 폐엽절제술군의 평균 연령은 $61.8{\pm}9.8$세로 개흉 폐엽절제술군의 평균 연령($64.6{\pm}9.6$세)보다 유의하게 낮았다(p=0.008). 흉강경 폐엽절제술군에서 여성과 선암의 비율이 통계적으로 유의하게 높았고, 수술 후 IA로 확진된 환자가 유의하게 많았다(p<0.001). 수술 사망은 없었고, 32명의 환자에서 34예의 합병증이 발생하였으며 이중 50%가 5일 이상 지속된 공기누출이었다. N1 림프절 전이, 폐문부위의 종괴, 폐동맥 손상으로 인한 출혈, 석회화된 림프절 및 심한 유착 등으로 총 8명의 환자에서 흉강경을 시도하였다가 개휼술로 전환하였다. 흉강경 폐엽절제술군에서 흉관 유지 기간(p=0.031) 및 술후 재원 일수(p<0.001)가 통계적으로 유의하게 짧았고, 절제된 림프절 수(p<0.001)와 병리학적 종괴의 크기(p<0.001)가 작았다. 병리학적 병기 I기에서의 3년 생존율은 두 군 간에 차이가 없었으나(p=0.15), 무병생존율은 개흉술을 시행 받은 군에서 통계적으로 유의하게 낮았다(p<0.001). 결론: 폐암에 대한 흉강경 폐엽절제술은 합병증이나 사망률, 생존률 및 무병생존률에서 개흉 폐엽절제술과 비교하여 비슷하거나 좋은 결과를 얻을 수 있었고, 초기 폐암에서 안전하게 시행될 수 있을 것으로 사료된다.

Keywords

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