Outbreak of adenovirus D8 in a neonatal intensive care unit involving multiple simultaneous transmission pathways.

BACKGROUND: Adenovirus (ADV) outbreaks in neonatal intensive care units (NICU) can lead to durable transmission and serious adverse outcomes. This study describes the investigation and control of an ADV-D8 outbreak in an NICU, associated with ophthalmologic equipment used during retinopathy of prematurity (ROP) screening. Cases were observed in neonates, parents and nurses. METHODS: The outbreak investigation was performed including sampling patients, parents and health care workers as well as the environment for molecular detection of ADV DNA. The investigation was also conducted in the guest house where some parents were temporary residents. A retrospective cohort study focused on neonates hospitalized during the epidemic period to assess the risk associated with ROP examination. RESULTS: Fifteen cases were identified in neonates; all but one presented with conjunctivitis. Two healthcare workers and 18 parents acquired conjunctivitis. ADV DNA was identified on the RetCam and on the freezer shared by parents. All ADV-positive samples were typed as ADV-D8. ADV infections occurred more frequently in neonates who had ROP examinations (37.8% (14/37) vs (0.9% (1/110); P<0.001) (relative risk 41.6; (5.7-305.8)). The RetCam was disinfected between two examinations using a disinfectant that was virucidal on ADV after a 30-min contact. CONCLUSION: This outbreak was significantly associated with ROP examination with a RetCam that had a disinfection protocol ill-adapted to rapid patient turnover. In addition, nosocomial transmission via the parents to neonates and parent-to-parent transmission is likely to have played a role in the dissemination of cases. No further cases were observed after the new disinfection procedure was enforced.

French multicentre prospective evaluation of radiofrequency ablation in the management of haemorrhoidal disease.

PURPOSE: The aim of this study was to evaluate the efficacy and safety of radiofrequency ablation (RFA) in the management of haemorrhoidal disease with 1 year's follow-up. METHOD: This prospective multicentre study assessed RFA (Rafaelo©) in outpatients with grade II-III haemorrhoids. RFA was performed in the operating room under locoregional or general anaesthesia. Primary endpoint was the evolution of a quality-of-life score adapted to the haemorrhoid pathology (HEMO-FISS-QoL) 3 months after surgery. Secondary endpoints were evolution of symptoms (prolapsus, bleeding, pain, itching, anal discomfort), complications, postoperative pain and medical leave. RESULTS: A total of 129 patients (69% men, median age 49 years) were operated on in 16 French centres. Median HEMO-FISS-QoL score dropped significantly from 17.4/100 to 0/100 (p < 0.0001) at 3 months. At 3 months, the rate of patients reporting bleeding (21% vs. 84%, p < 0.001), prolapse (34% vs. 91.3%, p < 0.001) and anal discomfort (0/10 vs. 5/10, p < 0.0001) decreased significantly. Median medical leave was 4 days [1-14]. Postoperative pain was 4/10, 1/10, 0/10 and 0/10 at weeks 1, 2, 3 and 4. Seven patients (5.4%) were reoperated on by haemorrhoidectomy for relapse, and three for complications. Reported complications were haemorrhage (3), dysuria (3), abscess (2), anal fissure (1), external haemorrhoidal thrombosis (10), pain requiring morphine (11). Degree of satisfaction was high (+ 5 at 3 months on a - 5/+ 5 scale). CONCLUSION: RFA is associated with an improvement in quality of life and symptoms with a good safety profile. As expected for minimally invasive surgery, postoperative pain is minor with short medical leave. CLINICAL TRIAL REGISTRATION AND DATE: Clinical trial NCT04229784 (18/01/2020).

[Uterine rupture in a patient with a cesarean scar pregnancy]. / Cas clinique. Rupture utérine en début de grossesse sur cicatrice de césarienne.

Caesarean scar pregnancy is a rare form of ectopic pregnancy, but it is increasingly common due to the increasing number of caesarean sections and advances in medical imaging. There are two types of cesarean scar pregnancy depending on the depth of the implantation : endogenous type I and exogenous type II. In the case of a pregnancy resulting from a type II caesarean scar, the main complication is uterine rupture, which could be life-threatening for the patient. Early diagnosis and treatment are therefore essential for the woman. We report the case of a patient in early pregnancy with a history of cesarean section who presented with severe pelvic pain due to uterine rupture.

La grossesse sur cicatrice de césarienne est une forme rare de grossesse extra-utérine mais dont la fréquence augmente en raison du nombre croissant de césariennes et du progrès de l'imagerie médicale. Il en existe deux types en fonction de la profondeur d'implantation : le type I endogène et le type II exogène. Dans les cas d'une grossesse sur cicatrice de césarienne de type II, la complication principale est la rupture utérine qui pourrait engager le pronostic vital de la patiente. Un diagnostic et un traitement précoce sont donc primordiaux pour la patiente. Nous rapportons le cas d'une patiente en début de grossesse avec un antécédent de césarienne qui se présente pour des douleurs abdominales aiguës dues à une rupture utérine.

[Alcohol, pregnancy and breast-feeding]. / Alcool, grossesse et allaitement.

Perinatal studies over the last ten years report that 3 % of pregnant women have alcohol consumption. The malformative and neurological consequences of prenatal exposure to alcohol have been known for more than 50 years. Research has shown that the effects of alcohol during pregnancy and breast-feeding go far beyond visible abnormalities at birth. Neurological consequences, from minor psychomotor retardation to severe behavioural disorders, make all the severity of this intoxication and justify strict instructions to refrain from taking alcohol during pregnancy and breast-feeding.

Les enquêtes périnatales réalisées au cours des dix dernières années rapportent que 3 % des femmes enceintes consomment de l'alcool. Les conséquences malformatives et neurologiques de l'exposition prénatale à l'alcool sont pourtant connues depuis plus de 50 ans et l'avancée des recherches a montré que les effets de l'alcool durant la grossesse et l'allaitement vont bien au-delà d'anomalies visibles à la naissance. Les conséquences neurologiques, du retard mineur aux troubles comportementaux sévères, illustrent toute la gravité de cette intoxication. Ils justifient une consigne stricte d'abstention de consommation d'alcool durant la grossesse et l'allaitement.

Online training on how to diagnose anoperineal lesions of Crohn's disease: Do pictures matter? A nationwide randomized study.

Any gastroenterologist must be trained to properly diagnose anoperineal lesions in patients with Crohn's disease (APLOC). The aim of this study was to establish whether adding pictures would improve teaching effectiveness of the diagnosis of APLOC to French gastroenterology trainees. METHOD: Trainees were asked to answer a first web-based survey consisting of evaluating 12 pictures of APLOC with a closed answer questionnaire. They were then randomized in 2 groups. Group A received an online teaching with typical pictures and APLOC definitions and group B definitions only. Trainees were asked again seven days later to answer a second survey with 12 other pictures of APLOC and 14 experts also answered this survey. Diagnostic scores were expressed in %. The primary endpoint was the comparison of the score of survey 2 between the two groups of trainees. Secondary endpoints were to compare results of survey 2 between trainees of both groups and experts, and assess diagnosis of each lesion. RESULTS: Two hundred fourty eight trainees among 465 answered survey 1, and 195 survey 2. The diagnostic score was 71.9% for groups A and B and 74.6% for experts (differences NS). After training diagnosis of ulceration was 72% for group A and 72.9% for group B, fistulae 85.2% versus 85.8%, erythema 44.1% vs. 55.6%, anoperineal scars 67.5% vs. 65.6%, and abscess 100% (differences NS). CONCLUSION: There was no difference between the two teaching methods. Further research should be performed aiming at improving teaching material and quotation baremes.

Doppler ultrasound in the diagnosis of Budd-Chiari syndrome in children after split liver transplantation.

PURPOSE: To assess the capabilities of a velocity ratio>3 for the diagnosis of Budd-Chiari syndrome (BCS) in children after split liver transplantation using Doppler ultrasonography (DUS). MATERIALS AND METHODS: A total of 28 children who underwent liver transplantation using a split procedure were included. There were 11boys and 17girls with a mean age of 3.8years (range: 0.7-12years). Velocity ratio between blood velocity upstream of the anastomosis and that at the level of the inferior vena cava anastomosis was calculated. Sensitivity, specificity and accuracy of DUS for the diagnosis of BCS were estimated using a velocity ratio>3. RESULTS: Eight children (8/28; 29%) had BCS and 20 (20/28; 71%) did not have BCS using the standard of reference. A velocity ratio>3 on DUS yielded 88% sensitivity (95% CI: 53-98%), 80% specificity (95% CI: 58-92%) and 82% accuracy (95% CI: 64-92%) for the diagnosis of BCS. CONCLUSION: A velocity ratio>3 on DUS is a reliable finding for the diagnosis of BCS in children after split liver transplantation.

Optimization of pegylated iron oxide nanoplatforms for antibody coupling and bio-targeting.

PEGylation has been established as a valuable strategy to minimize nanoparticle clearance by the reticulo-endothelial system due to hydrophilicity and steric repulsion of PEG chains. In this study we functionalized superparamagnetic iron oxide nanoparticle surface with two PEG differing in their length (n = 23 and 44) and terminal functionality, COOH and CH3. By varying the ratio of the two different PEG, we optimized the molecular architecture of the nanoplatform to obtain maximum stability and low toxicity under physiological conditions. The best nanoplatform was evaluated as MRI contrast for mouse brain vascularization imaging at 7 T. The carboxylic acid functions of the nanoplatform were used to covalently bind an antibody, Ab. This antibody, labeled with a fluorophore, targets the ETA receptor, a G-protein-coupled receptor involved in the endothelin axis and overexpressed in various solid tumours, including ovarian, prostate, colon, breast, bladder and lung cancers. In vitro studies, performed by flow cytometry and magnetic quantification, showed the targeting efficiency of the Ab-nanoplatforms. Clearly, an imaging tracer for cancer diagnosis from a bimodal contrast agent (fluorescence and MRI) was thus obtained.

Embolization of peripheral high-flow arteriovenous malformations with Onyx.

PURPOSE: The aim of this study was to report our experience in embolization of high flow peripheral arteriovenous malformations (AVMs) with Onyx. MATERIAL AND METHODS: Nineteen patients (10 men, 9 women) with peripheral high-flow AVMs who were treated with arteruial embolization using Onyx were retrospectively included. AVMs were located in the head and neck (6), extremities (5), chest (2), kidney (2), uterus (2), pelvis (1) and parietal (1). In 13 patients, embolization was done using Onyx only. One patient underwent embolization by direct puncture, the others by transarterial approach. Embolization was performed in one or multiple sessions (up to 5). A total of 28 sessions were performed. Follow-up was performed with a delay between 10 and 34 months. RESULTS: Technical success was achieved in all patients. Complete devascularization was obtained in 12 patients. Surgical excision was performed in 9 patients. Non-target Onyx embolization was not observed. One patient developed stroke. In 1 patient microcatheter fracture occured. One patient presented severe pain and bradycardia during the procedure that disappeared shortly after. One patient had persistent but less frequent epistaxis after embolization. Another patient had persistent pain without improvement. One patient was lost to follow-up. Other patients were free of symptoms on follow-up. CONCLUSIONS: Embolization with Onyx® is an interesting option for management of peripheral high-flow AVMs either preoperatively or as a single treatment.

The first joint ESGAR/ ESPR consensus statement on the technical performance of cross-sectional small bowel and colonic imaging.

OBJECTIVES: To develop guidelines describing a standardised approach to patient preparation and acquisition protocols for magnetic resonance imaging (MRI), computed tomography (CT) and ultrasound (US) of the small bowel and colon, with an emphasis on imaging inflammatory bowel disease. METHODS: An expert consensus committee of 13 members from the European Society of Gastrointestinal and Abdominal Radiology (ESGAR) and European Society of Paediatric Radiology (ESPR) undertook a six-stage modified Delphi process, including a detailed literature review, to create a series of consensus statements concerning patient preparation, imaging hardware and image acquisition protocols. RESULTS: One hundred and fifty-seven statements were scored for agreement by the panel of which 129 statements (82 %) achieved immediate consensus with a further 19 (12 %) achieving consensus after appropriate modification. Nine (6 %) statements were rejected as consensus could not be reached. CONCLUSIONS: These expert consensus recommendations can be used to help guide cross-sectional radiological practice for imaging the small bowel and colon. KEY POINTS: • Cross-sectional imaging is increasingly used to evaluate the bowel • Image quality is paramount to achieving high diagnostic accuracy • Guidelines concerning patient preparation and image acquisition protocols are provided.

[Complementary exams in child abuse: A French national study in 2015]. / Explorations complémentaires face à une situation d'enfant en danger : état des lieux des pratiques en France en 2015.

INTRODUCTION: Even if there are HAS (French National Health Authority) guidelines on shaken baby syndrome, many other child abuse situations are not included in these recommendations. The aim of this study was to invent the complementary exams in cases of child abuse in France and compare the practice to existing guidelines. MATERIAL AND METHODS: This was a multicenter study by email to 128 French hospitals (35 university hospitals and 93 general hospitals) that receives children in emergency and hospitalization settings. Three child abuse clinical situations were included in a clinical case multiple-choice format concerning the further explorations. We described the main results and evaluated their adherence to the HAS protocol for case 1. RESULTS: Of 128 hospitals surveyed, 104 responded, for an 81 % response rate, which corresponded to 274 doctors. Analysis of the results showed great heterogeneity in practices. The majority of physicians (99 %) performed systematic explorations in the situation of physical abuse, while only 27 % undertook such exams in situations of serious neglect. The situation of sexual abuse was the most consensual in terms of diagnostic tests for the detection of sexually transmitted diseases, but other types of associated abuse were not sought. In the first case, the HAS guidelines were respected in less than half of the cases for all complementary exams except the eye fundus exam. Abdominal imaging was insufficiently performed (40 % of cases). Examinations that were not indicated were still prescribed. Moreover, siblings under 2 years of age were examined in only one-third of cases (n=88/274; 32 %). Practices were not influenced by the age of the child. CONCLUSION: This study illustrates the heterogeneity in the use of complementary exams in cases of child abuse in France. Common protocols throughout the country would be useful, standardizing the most relevant exams for potential medical-legal issues, and facilitating exchanges concerning practices between different centers.

A hot Jupiter orbiting a 2-million-year-old solar-mass T Tauri star.

Hot Jupiters are giant Jupiter-like exoplanets that orbit their host stars 100 times more closely than Jupiter orbits the Sun. These planets presumably form in the outer part of the primordial disk from which both the central star and surrounding planets are born, then migrate inwards and yet avoid falling into their host star. It is, however, unclear whether this occurs early in the lives of hot Jupiters, when they are still embedded within protoplanetary disks, or later, once multiple planets are formed and interact. Although numerous hot Jupiters have been detected around mature Sun-like stars, their existence has not yet been firmly demonstrated for young stars, whose magnetic activity is so intense that it overshadows the radial velocity signal that close-in giant planets can induce. Here we report that the radial velocities of the young star V830 Tau exhibit a sine wave of period 4.93 days and semi-amplitude 75 metres per second, detected with a false-alarm probability of less than 0.03 per cent, after filtering out the magnetic activity plaguing the spectra. We find that this signal is unrelated to the 2.741-day rotation period of V830 Tau and we attribute it to the presence of a planet of mass 0.77 times that of Jupiter, orbiting at a distance of 0.057 astronomical units from the host star. Our result demonstrates that hot Jupiters can migrate inwards in less than two million years, probably as a result of planet­disk interactions.

Multimodality imaging of aortic coarctation: From the fetus to the adolescent.

Aortic coarctation is a local narrowing of the aortic lumen, which is located at the level of the isthmus in 95% of patients. Aortic coarctation accounts for 5 to 8% of all congenital heart diseases. It may have an acute presentation in the form of heart failure in the neonate or may be discovered incidentally in adult because of severe treatment-resistant hypertension. Ultrasound may reveal the presence of aortic coarctation during the antenatal period. In this situation, associated abnormalities should be investigated (including karyotype), because they influence prognosis and indicates whether or not the birth should occur in a center with pediatric cardiology expertise. Postnatally, ultrasound and chest radiography are the basic imaging work-up. Computed tomography is often the second line imaging investigation in infants and young children for whom magnetic resonance imaging fails to confirm the diagnosis. Magnetic resonance imaging with cardiac synchronization is the preferred imaging tool in the post-treatment period. Aortic coarctation may be treated surgically or by endovascular techniques. Potential complications should be searched for using ultrasound and magnetic resonance imaging.

Development and initial evaluation of a training program for peripherally inserted central catheter (PICC) placement for radiology residents and technicians.

OBJECTIVES: The goals of this study were to develop and evaluate a joint theoretical/practical training course for radiology residents and technicians and to start a collaborative practice agreement enabling radiology technicians to perform PICC placement under the responsibility of an interventional radiologist. MATERIALS AND METHODS: A joint training session based on literature evidences and international recommendations was designed. Participants were assessed before and after training, and were also asked to evaluate the program one month after completion of the training course. Practical post-training mentoring guidelines were laid down for radiologists supervising technicians. RESULTS: From January to April 2014, 6 radiology residents and 12 radiology technicians from the two interventional radiology departments of the University hospitals in Marseille took part in the training program. For both residents and technicians, significant improvement was observed between pretraining and post-training assessment. The majority of participants were satisfied with the program. CONCLUSION: Our experience suggests that combined theoretical and practical training in PICC placement allows improving technical skill and yields high degrees of satisfaction for both radiology residents and technicians. A collaborative practice agreement is now formally established to enable radiologists to delegate PICC placement procedures to radiology technicians.

Detection of pulmonary and coronary artery anomalies in tetralogy of Fallot using non-ECG-gated CT angiography.

OBJECTIVES: To evaluate the use of non-ECG-gated computed tomography (CT) angiography to describe pulmonary and coronary defects in patients with tetralogy of Fallot (TOF). PATIENTS AND METHODS: This retrospective study was carried out on TOF patients having undergone pre-operative non-ECG-gated CT angiography between February 2007 and September 2012. The following clinical parameters were recorded: mean age at CT angiography, sex, the existence of genetic disease and the need to sedate the patient prior to CT angiography. CT data were analyzed retrospectively to determine the site(s) of pulmonary stenosis (infundibular, valvular or arterial), the size of pulmonary arteries and the presence of anomalous coronary artery courses. CT findings were then compared to the anatomy observed during surgery. RESULTS: Thirty-five patients were included in the study. The mean age was 4.30±1.91months (boys/girls=17/18). Two patients had associated chromosome disorders (one 22q11 microdeletion and one CHARGE syndrome). Sixteen patients (45.71%) were sedated prior to CT. Pulmonary artery assessment revealed 24 patients (68.57%) with infundibular stenosis, 5 (17.5%) with infundibular and/or valvular stenosis, and 6 (21%) with anomalous pulmonary arteries. CT angiography also evidenced anomalous coronary arteries in 8 patients (22.85%). CONCLUSION: Due to its reduced scanning time and high spatial resolution, non-ECG-gated CT angiography is a non-invasive imaging modality that provides accurate information on pulmonary and coronary artery anatomy in patients with TOF.

[VENOUS THROMBOSIS OF THE LEFT OVARIAN AND EXTENSION TO THE RENAL VEIN]. / LE CAS CLINIQUE DU MOIS. Thrombose veineuse ovarienne gauche et extension à la veine rénale.

Ovarian vein thrombosis is a rare, but potentially serious postpartum complication. In 80% of the cases, it occurs on the right side and in less than 6% on the left side; it is bilateral in 14% of cases. The usual clinical features include abdominal pain, fever and leucocytosis. However, the diagnosis is often complicated by other non specific signs and symptoms. Ovarian vein thrombosis may cause sepsis, pulmonary thromboembolism, and thrombosis of the inferior vena cava and the renal vein. The diagnosis can be established by CT scan or nuclear magnetic resonance imaging, which has a high sensitivity and specificity. Treatment for the ovarian vein thrombosis includes antibiotics and anticoagulation. The complications can sometimes be surgically managed. Prompt diagnosis and treatment can decrease the morbidity and the mortality. Nowadays, the fatal issue is rare as the appropriate treatment is quickly instaured.

Cardiac CT or MRI in pediatric practice: Which one to choose?

The different factors involved in the choice of the best cardiovascular imaging examination for pediatric patients are justification, radiation protection, sedation, resolutions (spatial and contrast), morphology or function, intervention and contrast enhancement. Computed tomography is preferable for all coronary artery conditions, any arterial or venous abnormalities in newborns and infants and in the preoperative assessment for tetralogy of Fallot. Magnetic resonance imaging is used for any tumoral or functional assessment, cardiomyopathy or arrhythmia or if the child's participation and/or size of the structures being examined allows using this technique.

[Post-mortem perinatal imaging: State of the art and perspectives, with an emphasis on ultrasound]. / Imagerie post-mortem périnatale : état des lieux, point de vue et perspectives, échographiques en particulier.

The fields of application of post-mortem imaging have been exponentially growing for 10 years. Its potential to identify the cause of death in trauma and ballistic cases is now properly documented. In pediatric and perinatal practice, large significant series are less available, except for MRI and central nervous system analysis where scientific evidence is now robust. After a short historical and state-of-the-art review, we will try to depict the way we see the future of this sub-specialty of post-mortem imaging, especially in specific perinatal situations.