Gardner Syndrome Identified on Supernumerary Tooth Evaluation with Family Impact

A 15-year-old male was referred for evaluation of a supernumerary tooth in the maxilla and possible supernumerary teeth in the mandible. Upon review, the radiologist identified multiple sclerotic areas in the mandible and maxilla. These areas, in combination with the supernumerary tooth, were suspicious for Gardner syndrome. The patient was subsequently screened and Gardner syndrome was confirmed. As part of the recommended screening process, the patient's immediate family members were also evaluated. During family screening, the patient's mother was found to have gastrointestinal cancer, a known sequela of Gardner syndrome, which was identified at stage 2 and successfully treated with surgery. The patient's mother expressed gratitude to the referring practice, noting that without the radiologist's findings, the cancer would likely have been identified at a more advanced stage. Additionally, the patient is now aware of the genetic condition and can be closely monitored for colorectal cancer going forward. This case illustrates how findings on a routine dental CBCT can have far-reaching implications not only for the patient but for their family members as well.