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Hallar cells are a variant of ethmoidal air cell developing into the floor of the orbit adjacent to the natural ostium of the maxillary sinus. A diseased Haller cell is capable of obstructing that ostium and producing a maxillary sinusitis.
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What Are Haller Cells ? It Was Mentioned On My CT PNS.
Hi Welcome to HCM. Hallar cells are a variant of ethmoidal air cell developing into the floor of the orbit adjacent to the natural ostium of the maxillary sinus. A diseased Haller cell is capable of obstructing that ostium and producing a maxillary sinusitis.