Giant cell tumor of soft tissues: A case report of extra-articular diffuse-type giant cell tumor of the quadriceps

In this report, the authors describe a child presenting at 6 months old with a rapidly expanding extracranial left temporal mass concerning for malignancy. The mass was successfully treated at 16 months with radical surgical excision. The patient was found to have a tenosynovial giant cell tumor, diffuse type, completely encased by the temporalis muscle. To our knowledge, this is the first report of a case of diffuse type tenosynovial giant cell tumor in the temporalis muscle, without articular involvement, presenting in an infant.

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Giant cell tumour of soft tissue—a rare presentation of a common pathology

Chopra

Kinsella

Edwards

et al. 2020

BJR|case reports

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We present the case of a giant cell tumour of soft tissue (GCT-ST) presenting as a slow-growing paraspinal mass. Imaging investigations revealed a well-circumscribed subcutaneous lesion containing fluid–fluid levels and an internal solid nodule. The imaging findings resulted in only a tentative differential which included haematoma or complex epidermoid cyst but failed to provide a definitive diagnosis. The patient underwent an image-guided biopsy from which a histopathological diagnosis of a GCT-ST was made. GCT-ST is a primary soft tissue neoplasm that is clinically and histologically similar to giant cell tumour of bone. Given its rare occurrence, there is very little published literature on the characteristic imaging findings of GCT-ST to help with its diagnosis which is usually only made histologically. The aim of this case report is to highlight our specific imaging findings and add to the limited pre-existing imaging data on GCT-ST.

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Giant cell tumor of soft tissues: A case report of extra-articular diffuse-type giant cell tumor of the quadriceps

Cited by 4 publications

References 9 publications

Tenosynovial giant cell tumors of digits: MRI differentiation between localized types and diffuse types with pathology correlation

Tenosynovial giant cell tumors of digits: MRI differentiation between localized types and diffuse types with pathology correlation

Tenosynovial Giant Cell Tumor in an Infant

Giant cell tumour of soft tissue—a rare presentation of a common pathology

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