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Giant cell tumour

Case contributed by: Dr Hani Salam

Presentation:

Pain and deformity of the wrist.

Patient Data:

Age: 30 years
Gender: Female
Race: Middle eastern

Wrist and forearm x-rays

Modality: X-ray

X-rays of the right forearm and wrist demonstrate a lytic expansile lesion involving the distal epiphysis of the radius. It abuts the radiocarpal joint (involving the epiphysis) and results in dorsal subluxation of the distal ulna. There is no matrix calcification. The margins are irregular with an aggressive appearance and relatively broad zone of transition. There is no convincing periosteal reaction. The carpus and ulnar appear unremarkable other than osteopaenic, presumably due to disuse. 

MRI wrist

Modality: MRI

MRI confirms the plain film features. A mass is centered on the distal radius, involving the articular surface of the radiocarpal joint. The mass is solid with intermediate to high T2 signal and low T1 signal and demonstrates relatively homogeneous contrast enhancement. No cystic areas or fluid-fluid levels identified. 

High T2 signal (oedema) is seen extending proximally along the interosseous membrane with some fluid also seen within the carpus, but no significant bone marrow oedema. The bone marrow of the more proximal radius, the ulnar and the carpal bones are unremarkable. 

Distribution of giant cell tumours

Modality: Diagram

Case Discussion:

This case illustrates typical appearances of a giant cell tumour (GCT). 

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