Mandibular hypercondylia is a rare and autonomous bone disease due to the excessive growth of the condylar cartilage. The radiological assessment following the clinical examination remains essential to the diagnostic orientation. Planar bone scintigraphy has been frequently used to assess the active or inactive nature of this situation. We report here the case of a patient whose diagnosis of active mandibular hypercondylia was retained due to the complement with SPECT / CT imaging, the planar bone scintigraphy being negative.