Relapsing focal myositis: a case report.

We present a 9 year old boy with a focal myositis presenting as a pseudotumor on the right calf. Other smaller masses were present in the thigh and pretibial area on the same leg. The principal lesion recurred after two surgical excisions. Corticosteroid treatment was unsuccessful. However, methotrexate therapy resulted in a progressive regression of the lesions.