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The development and pathologic processes that influence maxillary sinus pneumatization.

William Lawson1, Zara M Patel, Fred Y Lin

  • 1Department of Otolaryngology, Mount Sinai Medical Center, New York, New York 10029, USA. william.lawson@mssm.edu

Anatomical Record (Hoboken, N.J. : 2007)
|October 28, 2008
PubMed
Summary
This summary is machine-generated.

This study analyzed 6,000 CT scans to classify maxillary sinus volume and shape changes. It found diverse conditions, from tumors to genetic disorders, alter sinus morphology, with size reduction being more common than enlargement.

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Area of Science:

  • Anatomy and Radiology
  • Medical Imaging
  • Pathology

Background:

  • The maxillary sinus, a pyramidal cavity in the maxilla, has a standard description, but its variations and the factors influencing them are not comprehensively studied.
  • Previous studies relied on plain X-rays, but computed tomography (CT) imaging offers superior detail for assessing sinus morphology and volume.

Purpose of the Study:

  • To conduct a comprehensive review of conditions altering maxillary sinus volume and configuration.
  • To determine the types and relative incidences of these conditions using a large dataset of CT scans.
  • To propose a classification system for maxillary sinus volume and shape alterations.

Main Methods:

  • Retrospective review of 6,000 high-resolution CT scans of the paranasal sinuses.
  • Analysis of a mixed-sex, polyethnic sample group of 2,540 nonpediatric (adolescent and adult) individuals.
  • Classification of conditions based on their impact on maxillary sinus volume and configuration.

Main Results:

  • Maxillary sinus enlargement is uncommon, typically caused by pneumocele, mucocele, or benign tumors causing expansion.
  • Reduction in sinus size is more frequent, resulting from heredo-familial conditions, irradiation, surgical interventions (Caldwell-Luc procedure), midfacial fractures, systemic disorders (sickle cell anemia, osteopetrosis), and neoplasms.
  • Neoplasms, particularly malignant sinonasal and oral cavity tumors, are a major cause of sinus destruction through bony erosion.

Conclusions:

  • Diverse developmental and pathological conditions significantly influence maxillary sinus morphology, leading to variations in size and shape.
  • While the range of conditions is broad, the biological response of the maxillary sinus often falls within a limited spectrum of changes.
  • CT imaging provides detailed insights into these alterations, enabling a proposed classification system for better understanding and diagnosis.