Concha bullosa sinusitis
Left nasal cavity obstruction
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Abnormal fluid within aerated left middle concha. The finding suggests either middle concha sinusitis or mucocele.
Middle concha is a bone process situated inferior and medial to the ethmoid air cells. When pneumatised, it is a called concha bullosa. Pneumatisation may happen anteriorly and posteriorly. When anterior, it becomes more liable to mucocele. Pneumatised middle concha is liable to the same inflammatory disorders that affect the paranasal sinuses.