Unicameral bone cyst

Case contributed by Dr Prashant Mudgal


Young female presented with h/o fall on outstretched hand and pain in the right shoulder and arm.

Patient Data

Age: 13 year
Gender: Female

There is a sharply demarcated lytic lesion noted in the proximal humerus causing cortical expansion and thinning. The lesion is multiloculated and is associated with  pathological fracture with fracture fragment can be seen in the dependent portion of cyst (Fallen fragment sign). Image findings are suggestive of simple (unicameral) bone cyst.

Case Discussion

Typical appearance of unicameral bone cyst. The patient is typically in his 2nd decade of life, presented with multiloculated cyst  in proximal humerus with pathological fracture and fallen fragment sign.

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Case information

rID: 26076
Published: 27th Nov 2013
Last edited: 14th Aug 2019
Tag: pm
Inclusion in quiz mode: Included

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