자궁내막암의 치료 후 루틴 추적검사 방법으로서 FDG-PET/CT의 유용성

Usefulness of FDG-PET/CT as a Diagnostic Tool for Routine Post Therapy Evaluation in Endometrial Cancer

  • 이신재 (차의과학대학교 분당차병원 영상의학과) ;
  • 전태주 (차의과학대학교 분당차병원 핵의학과) ;
  • 김승조 (차의과학대학교 분당차병원 부인암 센터) ;
  • 김희진 (차의과학대학교 분당차병원 영상의학과) ;
  • 안희정 (차의과학대학교 분당차병원 병리과)
  • Lee, Shin-Jae (Department of Radiology, CHA Bundang Medical center, CHA University) ;
  • Jeon, Tae-Joo (Department of Nuclear medicine, CHA Bundang Medical center, CHA University) ;
  • Kim, Seung-Jo (Department of Gynecologic Oncology, CHA Bundang Medical center, CHA University) ;
  • Kim, Hee-Jin (Department of Radiology, CHA Bundang Medical center, CHA University) ;
  • An, Hee-Jung (Department of pathology, CHA Bundang Medical center, CHA University)
  • 발행 : 2009.08.30

초록

목적: 자궁내막암의 치료 후 루틴 추적관찰로써의 FDG-PET/ET의 유용성에 대해 알아보고자 하였다. 대상 및 방법: 자궁내막암으로 치료 받은 환자 중 2004년 1월 1일부터 2008년 1월 31일 사이에 FDG-PET/CT를 시행한 101명의 환자(25-79세, 평균 50.6세)를 대상으로 하였다. 모든 환자에서 종양표지 자와 다른 영상의학적 검사(CT, MR)에 대해서도 함께 검토하였다. FDG-PET/CT상 국소 FDG 섭취를 보인 병변을 benign, equivocal, malignant로 분류하였고, equivocal과 maliganat 병변에 대하여 조직학적 혹은 임상적으로 재발유무를 판정하였다. 결과: FDG-PET/CT상 강한 섭취를 보인 경우는 19명의 30개의 병변이었다. Malignant 섭취를 보인 환자는 14명이었고, 이중 11예가 재발로 확인되었다. Equivocal 병변을 보인 환자는 5명 이었고, 이중 1예가 재발로 확인되었다. 위음성을 보인 경우는 2예가 있었고, 모두 복강내 암종증 환자로 진단되었다. 이상의 결과를 종합하였을 때, 자궁내막암의 치료 후 재발의 평가에 대한 전반적인 결과는 예민도 86 %,특이도 92 %, 양성 예측도 63 %, 음성예측도 98 %, 그리고 정확도는 91 %였다. 결론: 자궁내막암의 치료 후 루틴 추적관찰로써 FDG-PET/ET를 시행할 경우 높은 예민도, 특이도로 재발의 진단에 도움이 될 뿐만 아니라 높은 음성 예측도로 인하여 FDG-PET/CT상 음성인 경우 불필요한 추가 검사를 피할 수 있을 것으로 기대된다.

Purpose: The aim of this study was to evaluate the usefulness of FDG-PET/CT as follow up imaging tool in patients with endometrial cancer after therapy. Material and Methods: One hundred one patients with endometrial cancer who underwent FDG PET/CT after the treatment of this disease were included in this study population (25-79 yr old, Mean age 50.6 yr old) and all these patients also performed various laboratory and imaging studies such as serum tumor marker, CT or MRI. The lesions having increased focal FDG uptake were classified into benign, equivocal, and malignant one according to their pattern and activity. Tumor recurrence was confirmed by histopathological results and other clinical and imaging data. Results: Among the 19 patients with 30 malignant or equivocal hot uptakes, 11 of 14 patients supposed to be malignant finding in PET/CT were proved to be tumor recurrence, while one of 5 patients with equivocal lesions were recurred malignancy, Two false negative cases were turned out to be peritoneal carcinomatosis, Estimated sensitivity, specificity and accuracy of PET/CT for diagnosis of recurrence in endometrial carcinoma after treatment were 86 %, 92 % and 91 %, respectively. Positive and negative predictive values in the same issue were 63% and 98%, respectively. Conclusion: FDG-PET/CT is useful for regular work up of endometrial carcinoma after the treatment because of its high negative predictive value as well as high sensitivity and specificity.

키워드

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