[Haemophilus meningitis in properly vaccinated children: report of three cases]. / Méningites à Haemophilus chez des enfants vaccinés : à propos de 3 cas.

The 1993 introduction in France of the vaccine against the serotype b of Haemophilus influenzae (Hib) resulted in a fast reduction of invasive infections caused by this species. However, despite the introduction of a booster dose, cases of Hib meningitis can still be observed, even if they are exceptional. We report here on 3 cases of Hib meningitis observed at Rennes University Hospital, which occurred during the winter seasons between 2007 and 2010, in properly vaccinated infants and children aged 9, 14, and 29 months. Progression after treatment was satisfactory in all 3 cases, and no immune deficiency was detected. After 18 years of the vaccination policy in France, these observations demonstrate that a risk, although much lower, of Hib meningitis persists in infants and children, including in vaccinated patients, and that strains still are circulating within the general population.

[Diffusion-weighted MR imaging of the breast]. / Diffusion en IRM mammaire.

Diffusion-weighted imaging is helpful to further characterize lesions that remain indeterminate after morphological and dynamic MR evaluation. Suspicious lesions are hyperintense on diffusion-weighted images with corresponding low ADC values, indicating restricted diffusion and hypercellularity. Benign lesions and tumors responding to treatment usually have no diffusion restriction. ADC maps are useful for T2W hyperintense lesions that could mask the presence of restricted diffusion. Image fusion is sometimes needed to accurately localize enhancing lesions on ADC maps. For indeterminate lesions, a hypocellular appearance suggests a lower ACR category whereas the presence of restricted diffusion suggests a higher category.

[Imaging and PET-CT of adult and childhood lymphoma]. / Imagerie radiologique et TEP scanner des lymphomes de l'adulte et de l'enfant.

Malignant lymphomas are lymphoproliferative disorders arising in both lymphoid tissue and non-lymphoid organ systems. Treatment rarely is surgical, and currently relies on a combination of chemotherapy and radiation therapy. The role of imaging is to determine the spread of the disease, to identify targets and to assess therapeutic response. Imaging techniques mainly use morphological criteria, and may underestimate infiltrative disease, as observed in bones. The frequent presence of residual masses after treatment usually prevents classification of patients as complete response. Over time, positron emission tomography (PET) with F18-fluorodeoxyglucose (FDG) has become a prominent part of the workup at diagnosis and during follow-up. Recently, PET has been integrated in the revised response criteria for malignant lymphoma.

[Practice for insulin infusion in preterm infants]. / Modalités d'administration de l'insuline par voie intraveineuse chez le nouveau-né prématuré.

UNLABELLED: Transient neonatal hyperglycemia is commonly observed during the first week of life in the preterm infants less than 30 weeks of gestational age. Continuous insulin infusion is an effective treatment in this situation. OBJECTIVE: To ascertain how insulin is administered in different french neonatal intensive care units. MATERIAL AND METHODS: We surveyed 49 neonatal intensive care units with a questionnaire. Response rate was 77.5% (38/49). RESULTS: Thirty four of 38 neonatal intensive care units reported the use of insulin infusions in this setting. Glucose level indicating insulin therapy and the initial insulin doses were quite variable according to the different units (respectively 7-16.5 mmol/l and 0.01-0.1 U/kg/h). A range of minimal insulin concentrations was used (0.01-0.1 U/ml), 57% utilizing concentration between 0.05 and 0.2 U/ml. Flow rates below 0.3 ml/h were used at time by 76%. Albumin was rarely added. Fifty seven percent of the neonatal intensive care units took counter-measures such as preconditioning and flushing the tubing to control insulin loss due to adsorption. The counter-measures were differently applied. Despite these measures, hyperglycemia and insulin resistance were frequently observed (respectively 30% and 47%). The different practices are discussed according to the literature. CONCLUSION: In order to deliver insulin reliably, we suggest an insulin delivery method for the preterm infants.

Alborixin, a new antibiotic ionophore: isolation, structure, physical and chemical properties.

Alborixin, a polycyclic polyether ionophorous antibiotic, active against Gram-positive bacteria and fungi, was isolated from cultures of a strain of Streptomyces albus. The isolation, structure and physiochemical properties of this antibiotic are reported. Some derivatives have been prepared and their structures and properties are also described in this paper.