Duchenne muscular dystrophy

Case contributed by Dr Varun Babu

Presentation

Known patient with Duchenne muscular dystrophy came for evaluation of right knee pain.

Patient Data

Age: 12 years
Gender: Male
MRI

Thigh screening

Generalized muscle atrophy with fatty replacement is seen in the muscles of all compartment of thigh. There is relative sparing of sartorius, gracilis and semitendinosus muscles. The underlying femur is normal. 

MRI

Knee

PD fat sat and STIR hyperintense signals are seen involving the tibial and femoral epiphysis with no internal derangement. Mild reactive effusion. 

MRI

Mid calf screening

Muscles of the compartments of the leg show generalized atrophy with fatty proliferation. Relative sparing of both gastrocnemius heads. Underlying tibia and fibula are normal. 

Case Discussion

X linked recessive muscular dystrophy that is commonly seen in children that begins in the proximal pelvic girdle and progresses distally. Non quantitative MRI usually depicts a relative sparing of sartorius, gracilis and semintendinosus muscles in the thigh and the gastrocnemius in the leg. 

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Case information

rID: 50183
Case created: 23rd Dec 2016
Last edited: 13th Jan 2017
Inclusion in quiz mode: Included

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