Monday, November 2, 2009

simple bone cyst





Location:Metaphyseal,central.

Age:Children(6-10).

Pattern of bone destruction:Geographic type 1 b-lytic lesion

D.D. according to location and age

-Fibrous dysplasia.

-Pyogenic osteomyelitis.

-Enchondroma

-Simple bone cyst.

Discussion:The pattern of bone destruction (geographic) can exclude pyogenic osteomyelitis,while appearance as a lytic lesion could exclude enchondroma due to abscense of chondral matrix,also abscense of internal septation could exclude fibrous dysplasia.

Diagnosis:Simple bone cyst.

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