Streptococcus pyogenes infections are common in the pediatric population in the form of tonsillopharyngitis or cutaneous disease. Less frequently, it presents with invasive forms such as pyomyositis or necrotizing fasciitis. Mortality in children is of 7 %. We present an 11-year-old patient with a subscapular venolymphatic malformation who consulted for febrile syndrome associated with pain and an acute increase in the size of the lesion. During the hospitalization, diagnosis of pyomyositis due to Streptococcus pyogenes was reached.
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