Bifid Mandibular Condyle: CT and MR Imaging Appearance in Two Patients: Case Report and Review of the Literature
Jabi Shrikia,
Raisa Leva,
Brian F. Wongb,
Michael J. Sundinec and
Anton N. Hassoa
a Department of Radiological Sciences, University of California, Irvine Medical Center, Irvine, CA
b Department of Otolaryngology/Head and Neck Surgery, University of California, Irvine Medical Center, Irvine, CA
c Department of Plastic Surgery, University of California, Irvine Medical Center, Irvine, CA
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FIG 1. Axial (A) and coronal (B) thin-cut CT images through the mandible demonstrate a bifid mandibular condyle on the right side with mediolaterally oriented heads.
C, Axial, T1-weighted MR imaging demonstrates the bifid mandibular condyle on the right side, but also demonstrates subtle fatty atrophy of the muscles of mastication ipsilaterally.
D, Coronal T1-weighted MR imaging images demonstrate the bifid condyle on the right side and also demonstrate that the meniscus has the shape of a T, with a third limb interdigitating between the two mandibular heads.
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FIG 2. A, Coronal thin-cut CT images demonstrate that the left mandibular condyle is bifid, with mediolaterally oriented heads. Although both mandibular heads are small and deformed, the left is much smaller than the right.
B and C, Axial, T1-weighted MR imaging images again demonstrate the bifid mandibular condyle.
D, Coronal images demonstrate the mediolaterally oriented heads and also show the T-shaped meniscus, with the descending limb of the T interdigitating between the mediolaterally oriented heads.
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