자궁의 악성 혼합성 뮬러리안 종양 환자에서의 FDG PET의 역할

The Role of F-18 Fluorodeoxyglucose Positron Emission Tomography in Patients with Malignant Mixed Mullerian Tumors of the Uterus

  • Hidayat, Basuki (Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Cheon, Gi-Jeong (Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Chae, Min-Jeong (Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Kim, Moon-Hong (Department of Obsteric & Gynecology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Kim, Min-Suk (Departement of Pathology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Choi, Chang-Woon (Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences) ;
  • Lim, Sang-Moo (Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences)
  • 발행 : 2006.02.28

초록

목적 :. 악성 혼합 뮬러리안 종양(malignant mixed Mullerian tumor, MMMT)은 매우 드문 자궁의 악성질환으로 매우 치명적인 임상경과를 보인다. 현재까지의 적절한 치료법은 수술적으로 완전제거를 하는 것이다. 이 연구에서는 MMMT 환자에서 진단시 병기결정과 추적관찰에 재발 및 잔류암을 진단하는데 FDG PET의 역할을 알아보고자 하였다. 대상 및 방법: MMMT로 진단 후 수술적 치료전 병기결정을 위해 검사한 환자가 1명, 수술 및 치료후 재발 및 잔류암을 검사하기 위해 9명의 환자가 FDG PET을 시행하였다. PET의 판독은 국소 대사항진 병소를 주로 육안적으로 판정하였다. 추적관찰 기간 동안의 종양표지자 CA 125 값과 영상검사, 병리조직 소견을 비교 평가하였다. 결과: 10명의 환자 중 3명에서 PET에서 이상 섭취소견이 있었다. FDG 양성인 환자의 한 예에서는 CA 125가 증가하였으며 이 경우 병리학적 소견에서 선암분획(carcinomatous element)인 높은 양상이었다. 이 경우 해부학적 영상법으로 찾을 수 없는 병소를 PET 영상에서만 찾을 수 있었다. 이에 반하여 다른 한 예에서는 CA 125가 추적관찰기간 동안 정상이었는데 PET 영상에서 재발 병소를 찾을 수 있었으며 해부학적 영상법보다 더 많은 병소를 찾을 수 있었다. 이 경우는 병리학적인 소견이 주로 육종분획(sarcomatous element)이 높은 양상이었다. 다른 한 예에서도 추적 기간 동안의 CA 125 상승이 관찰되었고 이 경우 선암분회이 역시 높게 관찰되었다. PET 검사에서 이상 소견이 없는 7 예에서는 추적관찰 기간($51.7{\pm}12.2$개월) 동안 종양표지자의 상승이나 재발의 소견은 없었으며 평균 재발없는 생존기간이 $36.4{\pm}6.0$ 개월이었다. 추적기간 중 PET상 이상 소견이 있었던 2명의 예에서는 추적관찰 기간($6.0{\pm}4.2$개월) 내에 모두 재발이 확인되었다. 결론: FDG PET은 MMMT 환자의 진단 당시 예상치 못했던 원위부의 전이나 치료 후 추적관찰 기간 동안 재발이나 잔류암의 진단에 유용한 검사법으로 이용할 수 있겠다.

Purpose: Malignant Mixed Mullerian Tumor (MMMT) of the uterine corpus is one of the very uncommon and the most lethal tumors in the uterus. The aim of this study was to evaluate the role of FDG PET in detecting distant metastasis and residual and/or recurrent disease. Methods: Ten patients who underwent FDG PET for detecting distant metastasis and recurrence were included. focal FDG accumulation was regarded as abnormal. We also reviewed serum CA 125 levels, anatomical images, and histopathoiogical examination. Results: Three patients of 10 FDG PET showed abnormal FDG uptake. One had high serum CA 125 levels and high fractions of carcinomatous element on histopathologic examination. FDG PET showed metastatic lesions in unexpected locations, which could not be detected by anatomical images. Another had normal serum CA 125 levels with high sarcomatous element and CT could only detect a few lesions. The other had high serum CA 125 levels and also had high carcinomatous element. Seven patients who had no abnormal uptake on FDG PET had no clinical evidence of recurrence during the follow up period ($51.7{\pm}12.2$ months). The mean disease free intervals of these 7 patients were $36.4{\pm}6.0$ months. Two patients with abnormal findings had never become disease-free condition during the follow up period ($6.0{\pm}4.2$ months. Conclusion: FDG PET could be a useful modality for unexpected distant metastasis and follow up tool in patients with MMMT.

키워드

참고문헌

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