[Unexpectedly complicated laryngoscopy caused by a massive mandibular tori].

Here, we report a case of an unexpectedly complicated laryngoscopy caused by massive mandibular tori. A 64-year-old man with mitral regurgitation and aortic regurgitation was scheduled for a double valve replacement. Thyromental distance and the Mallampati score were used as predictive factors of difficult intubation, and both factors were within the normal range.