Agenesisofthesphenoidsinuses isavery rarely encountered anatomic variation. Findings onmagnetic resonance imagingcan mislead the radiologist and clinician. Therefore, thegold standardfor diagnosis is computed tomography (CT) of the paranasal sinuses. We present the case of a 28-year-old manwho was admitted toourhospital witha 3-month history ofheadache. CToftheparanasal sinuses revealed isolated bilateral sphenoid sinus agenesis.
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