Clinical presentation:
35 year old male with wrist pain.

There is a solitary, expanding, multi-loculate, well-defined lesion in the distal metaphysis of the right radius, extending almost to the joint surface. The lesion is crossed by numerous strands of dense bone, consistent with the loculation and partial septation. The cortex is so thinned as to be invisible in this reduced quality image. The endosteal margin is visible and has a narrow zone of transition between normal and abnormal bone. The skeleton is mature. The adjacent soft tissue is not well shown, but the original images showed no extra-axial soft tissue extension.

Compare with simple bone cyst. There is no example of Adamantinoma.