Abstract
Planar bone Scintigraphy has been frequently used to assess the active or inactive nature of mandibular hypercondylia. We report here the case of a patient whose diagnosis of active mandibular hypercondylia was retained after a complement with SPECT/CT imaging, the planar bone scan being negative. This case confirms the use of SPECT/ CT as the examination of choice for full assessment of mandibular hypercondylia in adults. Using bone Scintigraphy SPECT/CT improves both sensitivity and specificity of diagnosing this condition.
Highlights
Mandibular hypercondylia is a rare and autonomous bone disease due to the excessive growth of the condylar cartilage induced seemingly by a disruption of the feedback loops between the different histological layers leading to a persistence of the multiplication of prechondroblastic cells
We report here the case of a patient whose diagnosis of active mandibular hypercondylia was retained after a complement with single photon emission computered tomography (SPECT)/CT imaging, the planar bone scan being negative
The patient is a 43-year-old female, with no significant pathological history, who has had mandibular asymmetry for 10 years. She is directed to the nuclear medicine department for a scintigraphic evaluation of condylar activity following the diagnosis of left mandibular hypercondylia, which was revealed after completing dental panoramic examination supplemented by a craniofacial diagnostic CT scan
Summary
Mandibular hypercondylia is a rare and autonomous bone disease due to the excessive growth of the condylar cartilage induced seemingly by a disruption of the feedback loops between the different histological layers leading to a persistence of the multiplication of prechondroblastic cells. Mandibular hypercondylia affects the overall development of the mandible and this condition is characterized clinically by atypical facial asymmetry, with a pronounced mandible anatomy, a disturbed occlusion, and a tilted occlusal plane [1]. Planar bone scintigraphy has been frequently used to assess the active or inactive nature of this situation [2] [3]
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