‘Tear-drop’ appearance on PNS x-ray is seen in?
Correct Answer: Fracture floor of the orbit
Description: Ans. D. Fracture floor of the orbit1. Orbital fracture is commonly seen in patients with direct blunt injury to the maxillofacial area.2. Blunt trauma to the orbit results in in-drawing of the globe causing an abrupt increase in the intra-orbital pressure.3. The outcome is burst fractures of the orbital walls, most commonly the orbital floor and medial orbital wall (lamina papyracea) - On plain radiography, orbital fractures may be difficult to detect due to overlapping bony structures.4. Signs that may help to identify orbital trauma include:a. Orbital emphysemab. Air-fluid level within adjacent maxillary sinusc. Soft tissue with a 'tear-drop' appearance projected over roof of maxillary sinus5. The exact anatomical extent, complexity of orbital fractures and trauma to other structures such as the lens is better appreciated by CT.
Category:
Radiology
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