["Tropical" pyomyositis in childhood].

We report on a 14 year old boy, who developed bacterial pyomyositis (Staphylococcus aureus) in his left thigh. Ultrasound and magnetic resonance imaging were very helpful for the differential diagnosis and follow-up of this infection which in large skeletal muscles frequently is associated with abscess formation. Treatment consisted of antibiotics and surgical drainage.

[Therapy of hypertonic dehydration].

Hypertonic dehydration developed in 30 patients (age ranged from 17 days to 28 months) with acute gastroenteritis. Rehydration was achieved with i.v.