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A 21-month-old girl presented with a decreased range of neck movements for 6 months and an ill-defined, firm, 8×4 cm swelling over her right trapezius and occipital region. She also had congenital valgus deformities of her great toes (fig 1).
MRI revealed diffuse infiltration of the muscles of her neck extending …
Competing interests: None.
Patient consent: Parental consent obtained.
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