2024年8月25日 · The ethmoid bulla, also known as bulla ethmoidalis, is the largest and most consistent air cell of the anterior ethmoidal air cells. It is a component of the ostiomeatal complex. It is located posterior to the frontal recess and enclosed laterally by the lamina papyracea. It forms the roof of the middle meatus.

The ethmoid bulla is formed by is the largest and least variable of the middle ethmoidal air cells. [3] The size of the bulla varies with that of its contained cells. The bulla may be a pneumatised cell or a bony prominence found in middle meatus.

2012年11月23日 · Coronal unenhanced CT scan shows normal sinus anatomy, including each maxillary ostium (arrows), uncinate process (arrowheads), ethmoid bulla (B), middle nasal turbinate (M), inferior nasal turbinate (I), and infraorbital ethmoid cells or Haller cells (asterisks).

The ethmoid bulla forms the posterior and superior walls of the ethmoid infundibulum and hiatus semilunaris. The ethmoid bulla is the largest anterior ethmoid air cell. It is also one of the most consistent air cells in the middle meatus and is therefore a reliable anatomic landmark (Fig. 2.13).

2025年3月12日 · Anterior ethmoid sinuses. Some of these ethmoid air cells drain through a passage called the hiatus semilunaris. Your frontal and maxillary sinuses also drain through this passage. Others drain through a structure called the ethmoidal bulla. Posterior ethmoid sinuses. These cells drain into the sphenoethmoidal recess.

The ethmoidal bulla (bulla ethmoidalis) is a constant landmark during ethmoid surge-ry and is the largest anterior ethmoid air cell. It lies posterior to the uncinate process (Figures 15). Figure 15: Endoscopic view of left ethmoid bulla (EB) in the middle meatus, behind the sickle shaped uncinate process (Un). Arrow points to “axilla”

We expanded this approach by first opening the frontal sinus in front of the ethmoid bulla and ensuring that the lamella of the ethmoid bulla was complete in most patients. The ethmoid bulla is a relatively constant anatomic landmark in the middle meatus, although it …

The ethmoidal bulla is a raised area located above the edge of the uncinate process of the ethmoid bone in the middle meatus region of the lateral wall of the nasal cavity. It creates a curved opening called the hiatus semilunaris underneath it.

2025年1月18日 · The ethmoidal bulla is a small, rounded structure that is located within the ethmoid bone. It is made up of thin, spongy bone tissue and is lined with a layer of mucous membrane. [4] The ethmoidal bulla is divided into two main regions: the …

The ethmoidal bulla is the largest air cell in the anterior ethmoidal cell group with the least amount of variability (Standring, 2020). The ethmoidal bulla is located posterior to the frontal recess and forms the roof of the middle meatus (which is also the location of drainage into the nasal cavity).