What are Haller cells?

Haller cells are anatomical variations of the paranasal sinuses specifically located within the ethmoid bone. They are accessory air cells that can be found in the infraorbital area, often situated between the orbit and the maxillary sinus. The presence of Haller cells can impact the anatomy of the nasal cavity and have clinical significance, particularly regarding sinus disease and surgery. These cells can also influence the drainage pathways of the maxillary sinus, potentially leading to complications if they obstruct ostia.

Understanding this anatomical feature is crucial for medical professionals, especially those involved in otolaryngology and respiratory health, as it aids in the comprehension of sinus anatomy and potential complications during sinus surgeries. Haller cells do not correlate with the other options, which include maxillary sinus cells, frontal air cells, and nasal vestibule cells, highlighting the unique positioning and classification of Haller cells specifically within the ethmoid region.