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Diagnosis, Treatment and Prognosis of Low Grade Central Osteosarcoma

저등급 중심부 골육종의 진단, 치료 및 예후

  • Song, Won Seok (Department of Orthopedic Surgery, Korea Cancer Center Hospital) ;
  • Cho, Wan Hyeong (Department of Orthopedic Surgery, Korea Cancer Center Hospital) ;
  • Lee, Kwang-Youl (Department of Orthopedic Surgery, Korea Cancer Center Hospital) ;
  • Kong, Chang-Bae (Department of Orthopedic Surgery, Korea Cancer Center Hospital) ;
  • Koh, Jae-Soo (Department of Pathology, Korea Cancer Center Hospital) ;
  • Jeon, Dae-Geun (Department of Orthopedic Surgery, Korea Cancer Center Hospital) ;
  • Lee, Soo-Yong (Department of Orthopedic Surgery, Korea Cancer Center Hospital)
  • 송원석 (원자력병원 정형외과학교실) ;
  • 조완형 (원자력병원 정형외과학교실) ;
  • 이광열 (원자력병원 정형외과학교실) ;
  • 공창배 (원자력병원 정형외과학교실) ;
  • 고재수 (원자력병원 병리학교실) ;
  • 전대근 (원자력병원 정형외과학교실) ;
  • 이수용 (원자력병원 정형외과학교실)
  • Received : 2014.09.16
  • Accepted : 2014.11.28
  • Published : 2014.12.30

Abstract

Purpose: We analyzed the diagnosis and the treatment outcomes of patients with central low grade osteosarcoma. Materials and Methods: We retrospectively reviewed 16 patients with central low grade osteosarcoma were treated at out institution between 1994 and 2011. Results: There were 4 men and 12 women with mean age of 26 years. Eleven patients were correctly diagnosed but 5 patients were misdiagnosed as osteoid osteoma, non ossifying fibroma, aneurysmal bone cyst, desmoplastic fibroma. 15 patients finally received wide margin en bloc excision and one of them treated under neoadjuvant chemotherapy. Final survival status was continuous disease free in 14 and 1 patient died of renal cell cancer. Remaining 1 with multifocal lesions is alive with disease for 7 years only treated radiation therapy on residual tumors. Nine (56%) of 16 tumors showed extra-osseous extension of tumor (56%) and 1 of them showed extra-compartmental tumors. Conclusion: The diagnosis of central low grade osteosarcoma is challenging, however, considering of the clinical suspicion, the typical findings of radiologic and pathologic features, proper diagnosis is needed. This tumor should be treated with wide excision, even after an intralesional excision, to avoid local recurrence or transformation to higher histologic grade.

목적: 저등급 중심부 골육종 환자의 진단, 치료 및 예후에 대하여 알아보고자 하였다. 대상 및 방법: 1994년부터 2011년까지 저등급 중심부 골육종으로 진단받고 본원에서 치료받은 16명의 환자를 대상으로 하였다. 결과: 환자 분포는 남자가 4명 여자가 12명이었으며 평균 연령은 26세였다. 초기 진단은 11명의 환자가 중심부 저등급 골육종으로 맞게 진단되었으나 나머지 5명의 환자는 각각 유골 골종, 비골화성 섬유종, 골모세포종, 동맥류성 골낭종, 결합조직형성 섬유종 등으로 오진되었다. 15명의 환자가 최종적으로 광범위 절제술을 시행하였으며 그 중 한 명은 수술 전 항암치료를 시행하였다. 그 중 14명의 환자가 치료 후 재발 없이 추시중이며, 한 명은 기존에 앓던 신세포암의 악화로 수술 후 21개월 후 사망하였다. 나머지 한 명은 다발성 종양 환자로, 부분적으로만 광범위 절제술을 시행하였으며 잔존 종양에 방사선 치료만을 시행한 후 7년째 생존 중이다. 9명(56%)의 환자가 종양이 피질골 밖까지 파급되어 있는 소견을 보였으며 그 중 한 명은 구획 외로까지의 파급을 보였다. 결론: 저등급 중심부 골육종은 진단이 어려우나 임상적 의심과 함께 조직병리학적, 영상학적인 특징을 고려하여 주의 깊은 감별이 요구된다. 치료에 있어서는 광범위 종양 절제술이 권장되며, 양성 종양으로 오진하여 병소내 절제술만 시행한 경우라도 국소 재발이나 고등급으로의 악성 전환 가능성이 있으므로 광범위 재절제술을 시행할 것을 권고하는 바이다.

Keywords

References

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