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OrthoVellum

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Oncology
intermediate
X-Type

Simple Bone Cyst (Unicameral Bone Cyst) - UBC

Benign Bone Lesions

A 9-year-old boy presents with sudden onset right arm pain after throwing a ball during cricket. Examination reveals tenderness over the proximal humerus with minimal swelling. Radiograph shows a central, well-defined lytic lesion in the proximal humeral metaphysis extending to (but not crossing) the physis, with a thin sclerotic rim, mild cortical thinning, and a minimally displaced transverse fracture. A small cortical bone fragment is seen within the lesion, lying in the most dependent portion of the cavity. Regarding this condition:

Mark each as TRUE or FALSE

A

The radiographic finding of a bone fragment lying in the dependent portion of the fluid-filled cavit...

B

UBC is classified as "active" when adjacent to the physis (as in this case) and "latent" when separa...

C

Immediate surgical curettage and bone grafting is mandatory for all UBCs presenting with pathologic ...

D

Initial management of this pathologic fracture should include immobilisation in a sling or collar-an...

E

Intralesional methylprednisolone injection is a commonly used treatment with 50-80% response rates, ...

Answer the questions to see explanations

Click T (True) or F (False) for each option