IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Mylohyoid boutonniere

Case contributed by Charlie Chia-Tsong Hsu
Diagnosis certain

Patient Data

Age: 65
Gender: Male
mri

Axial T2 FS of oral cavity demonstrating bilateral defects (red arrows) in the mylohyoid muscles (*). The right sublingual gland protrudes through the defect into the submandibular space giving the impression of a boutonniere deformity. The defect is smaller on the left side with only protrusion of of fat and vessels.

Coronal images again showing bilateral defects in the mylohyoid muscles in the mid coronal images (B and D). Note the intact muscle sling on the sequential anterior (A and C) and posterior (C and E) images.

Case Discussion

Mylohyoid boutonniere is a normal focal discontinuity in the mylohyoid muscle, which may permit the sublingual salivary gland, fat or vessels, or a combination of each, to protrude out from the sublingual space into the submandibular space.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.