'Tear-drop' appearance on PNS x-ray is seen in?

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.