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Coronoid process hyperplasia: CT studies.

P L Munk1, C A Helms

  • 1Department of Radiology, University of California Medical Center, San Francisco.

Radiology
|June 1, 1989
PubMed
Summary
This summary is machine-generated.

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Coronoid process hyperplasia restricts jaw movement due to mandibular enlargement. Computed tomography (CT) effectively diagnoses this condition, revealing enlarged coronoid processes and zygomatic arch changes.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Radiology
  • Pediatric Dentistry

Background:

  • Coronoid process hyperplasia causes restricted jaw movement.
  • The exact etiology of this condition remains unknown.
  • Enlargement of the coronoid process impinges on the zygomatic arch during mouth opening.

Purpose of the Study:

  • To describe the computed tomographic (CT) findings in patients diagnosed with coronoid process hyperplasia.
  • To highlight the diagnostic utility of CT in identifying this rare condition.

Main Methods:

  • Retrospective review of three patients (two bilateral, one unilateral) with coronoid process hyperplasia.
  • Analysis of computed tomographic (CT) scans to identify characteristic imaging features.

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Main Results:

  • CT revealed enlarged coronoid processes in all patients.
  • Sclerosis and erosion of the zygomatic arch were observed.
  • One patient, a 3-year-old boy, represents one of the youngest reported cases.

Conclusions:

  • Computed tomography (CT) is an effective and rapid diagnostic tool for coronoid process hyperplasia.
  • CT findings include coronoid process enlargement and associated zygomatic arch abnormalities.
  • Early diagnosis through CT may be crucial for management.