Canalis sinuosus mimicking a periapical inflammatory lesion

A case is presented in which an anatomical feature, canalis sinuosus, manif ested as a periapical radiolucency on an upper canine. This may have been i nterpreted as an inflammatory lesion and led to the patient receiving inapp ropriate treatment had a further radiograph not been taken. The incisive fo ramen and mental foramen are well known anatomical features which may mimic periapical inflammatory lesions, but ii is less common for ct neurovascula r canal to manifest as ct periapical radiolucency on an upper canine.