Thursday, January 3, 2008

27 - tear drop sign


Blowout fracture

The floor of the orbit is the most common portion of the orbit to sustain fracture. A classic radiographic finding in blow-out fractures is the presence of a polypoid mass (the tear-drop) protruding from the floor of the orbit into the maxillary antrum The tear-drop represents the herniated orbital contents, periorbital fat and inferior rectus muscle.

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