44-year-old woman with a painless swelling in the right submandibular region for two years.
Dynamic ultrasound during swallowing shows a displacement, herniation, of the sublingual gland from the sublingual space into the submandibular space caused by a benign anatomical discontinuity, boutonniére defect, in the mylohyoid muscle.
Mylohyoid boutonniére
Esther is a freelance sonography technician with a special interest in abdominal and musculoskeletal ultrasound.
More Cases from Esther Kroon
