肩甲骨関節窩に発生した骨内ガングリオンの一例
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概要
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Very few reports of the intraosseous ganglion of the glenoid have been written. Etiology of this lesion and how to treat it have also been uncertain. We experienced a case of symptomatic intraosseous ganglion of the glenoid.<BR>A 49-year-old woman complained of left shoulder pain. In physical examination, her shoulder showed a decrease of both active and passive range of motion with slight pain during shoulder elevation. Radiographic findings showed multilocular osteolytic lesions in the glenoid. CT images also showed multiple divided intraosseous cystic lesions with the same density as bone one. T2-weighted MRI showed cystic lesions with high signal intensity which had small extraosseous lesion of the posterior glenoid neck. An operation was performed suspecting an intraosseous ganglion. The arthroscopic examination showed posterior labral and capsular injury. Posterior approach was used for operation incision. An extraosseous cyst was located over the posterior glenoid neck, which had capsules filled with a transparent gelatinous substance. The extraosseous cyst extended to the intraosseous lesion directly. The cysts were curetted and filled with artificial bone (β-TCP). The histological examination of cystic mass was expressed as ganglion. She has not complained any symptom, and the radiographic images showed the lesion area was filled with new cancellous bone, without recurrence.<BR>In this case, the posterior labral and capsular injury was detected under arthroscopy, and the extraosseous ganglion reached the intraosseous area. It was thought that the origin of the lesion was sited at the extraosseous part and it penetrated into the glenoid.
- 日本肩関節学会の論文
日本肩関節学会 | 論文
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