Abstract
An eighteen-year old female with Oromandibular Limb Hypogenesis Syndrome Type 1A was imaged with Magnetic Resonance in the sagittal, coronal, and transverse planes with the jaws closed. The intrinsic muscles of the tongue, genioglossus, geniohyoid, mylohyoid, medial and lateral pterygoid muscles were identified and compared with a control of the same age and sex. All the muscles in question were present. Combined with the intrinsic muscles of the tongue, the genioglossus were approximately one-half the size of the control in the sagittal plane. The geniohyoid of the OLHS subject was enlarged most probably due to the hyperactivity of the floor of the mouth.
No significant differences were noted between the medial and lateral pterygoids when compared with the control, except that in the coronal plane the medial pterygoid was enlarged. A mass was noted posterior to the genioglossus, which is believed to be a lingual thyroid. MR imaging was shown to be helpful in differentiating between aglossia and hypoglossia in the Type 1 OLHS syndromes.
LLU Discipline
Orthodontics
Department
Dentistry
School
Graduate School
First Advisor
M. Toufic Jeiroudi
Second Advisor
Edwin Christiansen
Third Advisor
Pedro B. Nava, Jr.
Fourth Advisor
Willis Schlenker
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1988
Date (Title Page)
5-5-1988
Language
English
Library of Congress/MESH Subject Headings
Mandibular Diseases; Magnetic Resonance Imaging
Type
Thesis
Page Count
vi; 23
Digital Format
Digital Publisher
Loma Linda University Libraries
Copyright
Author
Usage Rights
This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.
Recommended Citation
Henken, Edmond H., "Magnetic Resonance Imaging of Oromandibular Limb Hypogenesis Syndrome (OLHS) : Type 1A Congenital Hypoglossia with Micrognathia" (1988). Loma Linda University Electronic Theses, Dissertations & Projects. 2286.
https://scholarsrepository.llu.edu/etd/2286
Collection
Loma Linda University Electronic Theses and Dissertations
Collection Website
http://scholarsrepository.llu.edu/etd/
Repository
Loma Linda University. Del E. Webb Memorial Library. University Archives