[Focal myositis: report of a case in pediatric age and review of the literature].

[focal myositis]

We present the case of a 13 years old boy with a year -old history of a painful tumour on the external and distal third of the right thigh . The imaging tests suggested a soft tissue tumour but the muscle biopsy revealed the typical findings of focal myositis . Focal myositis is a benign inflammatory pseudotumour of the skeletal muscle recognized as a distinct clinicopathological entity , but there have been descriptions of the cases initially diagnosed as focal myositis that have latter behaved as evident polymyositis . We have not found laboratory data to support a diagnosis of polymyositis in our patient .Although focal myositis is considered a self-limited disease , we believe a long -term clinical and biochemical follow-up is warranted , to confirm the absence of recurrence signs and /or the development of a generalized myopathy .

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focal myositis

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