case_images: PMC9979793_01
case_images: Photograph shows bilateral calf muscle pseudohypertrophy.
case_images: SMJ-64-81-g001.jpg
case_images: PMC9979793_01_SMJ-64-81-g001.jpg
case_images: F1
case_images: Gower's sign and bilateral calf muscle pseudohypertrophy were observed [Figure 1].
case_images: Spirometry graphs of the patient show the flow-volume and volume-time curves.
case_images: SMJ-64-81-g002.jpg
case_images: PMC9979793_01_SMJ-64-81-g002.jpg
case_images: F2
case_images: This revealed low forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) (62% and 53% predicted, respectively), and a normal FEV1/FVC ratio (0.85) that is suggestive of restrictive lung disease [Figure 2].
case_images: Cardiovascular MR imaging with late gadolinium enhancement (LGE). (a) Four-chamber view shows asymmetric thickening of inter-ventricular septum (white arrow). (b) Short-axis view at the mid-ventricular level shows mid-wall and subepicardial LGE in the left ventricular myocardium (white arrows).
case_images: SMJ-64-81-g003.jpg
case_images: PMC9979793_01_SMJ-64-81-g003.jpg
case_images: F3
case_images: Cardiac magnetic resonance (CMR) imaging was performed to assess for subclinical cardiomyopathy [Figure 3]. On CMR imaging, asymmetric thickening of inter-ventricular septum was demonstrated in four-chamber view [Figure 3a, white arrow]. Short-axis view at the mid-ventricular level revealed mid-wall and subepicardial late gadolinium enhancement (LGE) in the left ventricular myocardium [Figure 3b, white arrows].