Abstract
Chondroblastoma is a rare benign bone tumor, most often localized in the epiphysis of long bones. We report a case of atraumatic shoulder pain in a 17-year old soccer player. This chondroblastoma case demonstrates the difficult differentiation of chondroblastoma from giant cell tumor and clear cell chondrosarcoma and highlights possible pitfalls and clinical importance.
Highlights
Chondroblastoma is a rare benign bone tumor, most often localized in the epiphysis of long bones
Magnetic resonance (MR) arthrography, performed for the detection of ligamentous or labral injury, revealed a bone lesion located at the epiphysis of the humeral head (Figure 1)
Chondroblastoma is a bone tumor with a prevalence of only 1 to 2% of primary bone tumours [2]. It was first described as a “giant cell tumor with calcifications” by Kolodny in 1927, as a “calcifying giant cell tumor” by Ewing in 1928 and as an “epiphyseal chondromatous giant cell tumor” by Codman in 1931 [1, 2]
Summary
Chondroblastoma is a rare benign bone tumor, most often localized in the epiphysis of long bones. With a normal mobility of the shoulder joint. The location and morphology of this lesion, as well as the age of the patient, were suggestive for chondroblastoma. The hyper-intense signal intensity on the T2-weighted images was a typical for this diagnosis.
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