Radiology · single question

A panoramic shows earrings: one earring appears as 2 circles in the LEFT maxillary sinus. What is the actual location of this earring?

Left ear
Right ear
Nasal jewelry
Artifact from the cassette

Show answer and explanation

Correct answer: B. Right ear

Panoramic geometry creates a mirror/contralateral effect for certain structures. An object in the RIGHT ear can appear over the LEFT maxillary sinus area. The 2-circle earring appearing in the LEFT sinus is the RIGHT earring.

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