Journal of Korean Foot and Ankle Society (대한족부족관절학회지)

Korean Foot & Ankle Society (대한족부족관절학회)
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Chondroblastoma of the Talus Mimicking an Aneurysmal Bone Cyst: A Case Report

동맥류성 골낭종으로 오인된 거골에 발생한 연골모세포종: 증례 보고

  • Park, Ji Soo (Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine) ;
  • Suh, Jin Soo (Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine) ;
  • Choi, Jun Young (Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University College of Medicine)
  • 박지수 (인제대학교 의과대학 일산백병원 정형외과학교실) ;
  • 서진수 (인제대학교 의과대학 일산백병원 정형외과학교실) ;
  • 최준영 (인제대학교 의과대학 일산백병원 정형외과학교실)
  • Received : 2018.11.12
  • Accepted : 2019.01.28
  • Published : 2019.03.15
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Abstract

Chondroblastoma is a rare benign tumor that produces giant cells and cartilage matrix. The tumor occurs in people between 10 and 25 years with slightly higher incidence in males. The condition occurs in the proximal epiphysis of the tibia and humerus, distal epiphysis of the femur, but its occurrence in the talus is relatively rare, accounting for 4% of the total number of chondroblastoma cases. Chondroblastoma is often misdiagnosed as a primary aneurysmal bone cyst, giant cell tumor, chondromyxoid, and lesion of a secondary aneurysmal bone cyst by fibrous dysplasia. The most commonly used surgical method for chondroblastoma is broad curettage with bone grafting. In general, an aneurysmal bone cyst is associated with a second degree chondroblastoma, which is approximately 20%. Chondroblastoma of the talus and secondary aneurysmal bone cysts can be misdiagnosed as primary aneurysmal bone cysts. This paper reports a case of a young male patient with chondroblastoma of the talus, which was initially misdiagnosed as an aneurysmal bone cyst with involvement of the talo-navicular joint.

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References

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