[Haller's cells: morphologic evaluation and clinico-surgical relevance]

Area of Science:

• Anatomy
• Otolaryngology
• Radiology

Context:

• Haller's cells are ethmoidal cells extending into the orbit or maxillary sinus floor.
• Functional endoscopic sinus surgery (FESS) is a common procedure for sinonasal conditions.
• The prevalence and characteristics of Haller's cells require further investigation.

Purpose:

• To investigate the prevalence and morphometric characteristics of Haller's cells.
• To analyze the association of Haller's cells with other sinonasal anatomical variations.
• To determine the frequency distribution of Haller's cells based on their origin (anterior vs. posterior ethmoidal cells).
• To assess the opacification rate of Haller's cells on CT scans and during endoscopic surgery.

Summary:

• A study of 528 patients undergoing FESS found Haller's cells in 8.14% (43 patients).
• Morphometric analysis of CT scans revealed significant differences in Haller's cell incidence between men (4.9%) and women (11.9%).
• For the first time, a frequency distribution showed anterior ethmoidal cells as the origin for 88% of Haller's cells.
• CT scans indicated opacification (mucosal swelling or secretion retention) in 56% of Haller's cells.

Impact:

• This study provides valuable morphometric data on Haller's cells and their anatomical variations.
• Findings highlight the higher prevalence in women and the predominant origin from anterior ethmoidal cells.
• The high opacification rate suggests a potential role of Haller's cells in sinonasal pathology.