[Rhombencephalosynapsis : a rare cerebellar malformation not to miss].

Rhombencephalosynapsis (RS) is a rare cerebellar malformation characterized by the association of partial or total vermis agenesis and fusion of the cerebellar hemispheres. This malformation is often associated with supratentorial cerebral abnormalities and more rarely with extra-cranial abnormalities. The severity of the clinical manifestations and the prognosis of RS depend on the findings of the posterior fossa and the associated anomalies.

[An rare complication of scarlet fever : invasive group A streptococcal infection with streptococcal toxic shock syndrome].

Invasive Group A Streptococcus infections and streptococcal toxic shock syndrome are rare complications of common diseases in children such as scarlet fever or impetigo. These invasive diseases are particulary challenging because of their rapid progression and the lack of predisposing factors in most cases. Prompt diagnosis and treatment are mandatory to reduce the mortality associated with these severe diseases.