bulla ethmoidalis

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eth·moi·dal bul·la

[TA]
a bulging of the inner wall of the ethmoidal labyrinth in the middle meatus of the nose, just below the middle nasal concha; it is regarded as a rudimentary concha.
Synonym(s): bulla ethmoidalis [TA]

bulla ethmoidalis

A rounded, thin-walled, bony projection into the middle meatus of the nose underneath the middle turbinate bone, formed by an anterior ethmoid sinus.
See also: bulla
References in periodicals archive ?
The microdebrider then is employed to shave away the uncinate tissue and expose the ethmoid bulla.
Cell inferior to the ethmoid bulla adhering to the roof of the maxillary sinus, in continuity with the proximal infundibulum which formed part of the lateral wall of the infundibulum: Zinreich and Kennedy.
A cell that pneumatises into the frontal bone is named a frontal cell of the anterior ethmoid or bulla frontalis, and lies above the ethmoid bulla.
Nasal endoscopy can identify edema or erythema of the middle meatus or ethmoid bulla, but a plain sinus radiograph "is helpful in confirming the diagnosis of symptomatic patients with equivocal findings, particularly when specific criteria for radiographic interpretation are applied.
The identification and complete removal of the uncinate process results in a widened middle meatus and access to the ethmoid bulla, the frontal recess, and the outflow tract of the maxillary sinus.
Albert Van Haller Cell inferior to ethmoid bulla adhering to the roof of the maxillary sinus, in continuity with the proximal infundibulum which formed part of the lateral wall of the infundibulum: Zinreich and Kennedy.
At the time of surgery a well-defined ethmoid bulla was encountered in the left middle meatus (figure, B).
6) The boundaries of the frontal recess are typically formed by the agger nasi cell anteriorly; the lamina papyracea laterally; the most anterior and superior portion of the middle turbinate medially; and the ethmoid bulla, its associated bulla lamella, and the suprabullar cell (if present) posteriorly.
About 16(32%) patients had enlarged ethmoid bulla, 12(24%) patients had polypoidal changes.
Endoscopic ethmoidotomy was carried out through the anterior face of the ethmoid bulla (figure, B).
The infundibulum communicates with the nasal cavity through hiatus semilunaris, which is a narrow slit between the posterior free edge of uncinate process and ethmoid bulla.
The ostium of the ethmoid bulla is usually difficult to locate even with the use of a telescope.