Adamantinoma

Case contributed by Dr Jeremy Jones

Presentation

Knee injury while playing football. Restriction of movement and anterior tibial tenderness.

Patient Data

Age: 15
Gender: Male
X-ray

Tibial lesion of the proximal anterior cortex. Predominantly narrow zone of transition. Mixed lucent (cranial) and more sclerotic (caudal). No periosteal reaction. Appearances are indeterminate with some aggressive and some non-aggressive features. Further imaging required. Will likely require biopsy.

MRI

The lesion demonstrated on the plain film is T1 hypointense, T2/STIR hyperintense and enhances following contrast. There is accompanying diffusion restriction. No periosteal reaction or soft tissue mass. The lesion is solid, lytic with features of an aggressive lesion, but no periosteal reaction. In this location, the most likely diagnosis is adamantinoma.

Case Discussion

The lesion is solid, lytic with diffusion restriction. There is no cystic component. In this location, an aggressive cortical tumour is most likely to be an adamantinoma, and this was proven at biopsy.

PlayAdd to Share

Case information

rID: 26852
Published: 13th Sep 2018
Last edited: 13th Sep 2018
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.