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Haller cell

Pronunciation: hah′lĕr

Definition: 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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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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