Radiographic, MRI, and CT findings in a young dog with Becker-like muscular dystrophy

Vet Radiol Ultrasound. 2023 Mar;64(2):E19-E22. doi: 10.1111/vru.13200. Epub 2022 Dec 22.


An 8-month-old, male, crossbreed dog was presented for macroglossia, reduced mandibular extension, ptyalism, dysphagia, and regurgitation. Serum creatine kinase and aspartate aminotransferase activity were markedly increased. Thoracic radiographs showed an axial gastro-esophageal hiatal hernia, diaphragmatic thickening, and asymmetry. Magnetic resonance imaging of the head showed a severely enlarged tongue, symmetric increase in size of the geniohyoid and mylohyoid muscles, and diffuse masticatory hypomyotrophy. Whole-body CT ruled out other musculoskeletal abnormalities and further characterized the radiographic and MRI findings. Muscular histopathology was consistent with Becker muscular dystrophy.

Keywords: Canine; dystrophin; gene; masticatory myopathy; muscular biopsy.

MeSH terms

  • Animals
  • Dog Diseases* / diagnostic imaging
  • Dog Diseases* / pathology
  • Dogs
  • Dystrophin
  • Magnetic Resonance Imaging / veterinary
  • Male
  • Muscular Dystrophies* / pathology
  • Tomography, X-Ray Computed / veterinary


  • Dystrophin

Supplementary concepts

  • Congenital macroglossia