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This year we present three papers on recent advances in paediatrics from the fields of neonatology, adolescent medicine and Duchenne muscular dystrophy. 1. Recent studies question the application of pure oxygen for neonatal reanimation and suggest that lower concentrations or even air may be more adequate for the reanimation of most newborns. 2. Bullying is an aggressive, repetitive and intentionally blessing behaviour. It is observed mainly at school and the victims are usually children with a weak personality or children suffering from chronic diseases. The doctor's role is to detect this behaviour and to help protect the victims. 3. The respiratory surveillance of patients with Duchenne muscular dystrophy is the corner-stone of their management. An algorithm allows to time correctly the initiation of non-invasive ventilation and to insure as long as possible a good life quality.

This article summarizes the medical progress achieved in 2 frequent and 2 rare pathologies: 1. Cryptorchidism should be operated around 12 months of age and hormonal treatment abandoned in order to maintain fertility and avoid development of testicular tumors. 2. For the treatment of streptococcal pharyngitis oral cephalosporins for 4 to 5 days are equivalent to a Penicillin treatment of 10 days. 3. Thanks to carvedilol (a beta-blocker agent), levosimendan (a calcium sensibiliser) and nesiritide (an analog to the natriuretic peptide) a new hormonal approach to cardiac failure is possible. 4. Corticosteroids allow to improve quality of live and life expectancy in Duchenne muscular dystrophy, provided treatment starts early and a multidisciplinary approach is assured.

BACKGROUND: We present two cases of children who were diagnosed with cerebellitis with acute cerebellar swelling. This rare pathology is potentially fatal, and no clear treatment guidelines are described in the literature. DISCUSSION: Considering our experience, we discuss the different therapeutic strategies and propose aggressive surgical measures consisting of external ventricular drainage and posterior fossa decompression in case of failure of early response to medical treatment to limit secondary cerebellar and brainstem lesions.

Centronuclear myopathy (CNM) is a congenital myopathy characterized by chains of centrally located nuclei in a large number of muscle fibers. Clinically, an early-onset form was reported in several autosomal-recessive (AR) families and many sporadic patients, whereas a late-onset form was found in most autosomal-dominant (AD) families. The boundary between these two forms remains unclear, and the molecular basis of autosomal CNM is still unresolved. To better define the clinical and morphologic characteristics of autosomal CNM, the authors analyzed a series of 29 patients from 12 families. Two subgroups were identified in three AD families: two families had a relatively late onset of disease and a slow progression of diffuse weakness, whereas the third family, who had a similar clinical course, also presented a unique diffuse muscle hypertrophy. Two presumed AR families and seven sporadic patients were analyzed together, and three subgroups were identified: 1) an early-onset form with ophthalmoparesis; 2) an early-onset form without ophthalmoparesis; and 3) a late-onset form without ophthalmoparesis. Overall, 23 muscle biopsies were reviewed; a majority of patients had >20% central nuclei, fiber type 1 predominance, and a radial distribution of sarcoplasmic strands on oxidative stains. A marked endomysial fibrosis was observed in three sporadic patients with a relatively severe clinical course. The classification reported in this study will be useful for the diagnosis and the follow-up evaluation of patients with autosomal CNM and for the research into the molecular defects underlying the condition.