During each ovarian cycle, only a definite number of follicles ovulate, while the others undergo a degeneration process called atresia. We have designed a multi-scale mathematical model where ovulation and atresia result from a hormonal controlled selection process. A 2D-conservation law describes the age and maturity structuration of the follicular cell population. In this paper, we focus on t...

OBJECTIVE To investigate the spectrum of pulmonary atresia and critical pulmonary stenosis using right ventricular outflow tract angiography and explore its implications for catheter interventional treatment. DESIGN Prospective clinical study. SETTING Two paediatric cardiology centres. SUBJECTS 11 neonates or infants (aged 1 day to 8 months; weighing 2.3 to 7.8 kg) with pulmonary atresia ...

Of 253 infants with oesophageal atresia treated over an eight year period, 122 (48%) had a total of 213 other anomalies. Most commonly affected were the cardiovascular (61 cases, 29%), anorectal (30 cases, 14%), and genitourinary (29 cases, 14%) systems. The VATER (or VACTERL) association was present in 10% of cases, but occurred more often in patients who had oesophageal atresia without an ass...

Microcolon (unused colon) is not a common problem in neonates. Radiographic contrast medium enema shows a small caliber colon. This report concerns 12 neonates with microcolon, all identified between January 1995 and June 1997 by contrast medium colon study. Gestational ages were between 28 to 38 weeks and birth body weight between 1,400 to 3,100 grams. Six neonates had jejunal atresia (50%), t...

Multiple intestinal atresia (MIA) is a complex congenital defect which represents a challenge for the pediatric surgeon,especially in the rare event of encountering type IIIb or apple peel atresia, which has a high mortality rate. The surgeon’s aim is to preserve as much bowel length as possible, to avoid postoperative sepsis and to prevent long-term complications such as short bowel syndrome. ...

Isolated atresia of the aortic arch is rare. In aortic arch atresia the arch is continuous, yet a segment of it is atretic so that apart from a collateral circulation, communication with the lower aortic segment is absent. Haemodynamically, the condition is similar to complete interruption of the aortic arch. To our knowledge only 10 cases of isolated aortic arch atresia or interruption have be...

RATIONALE A combination of Vaginal atresia and septate uterus as a novel genital malformation has been reported the first time. It offers a support for the bidirectional theory. PATIENT CONCERNS A 23-year-old woman presented with the inability to perform intercourse. The unprecedented variant was misdiagnosed by magnetic resonance imaging and ultrasonography as low vaginal atresia associated ...

This case report describes a distal ureteral atresia along with ureteropelvic junction obstruction which occurred in a 19-month-old female child. It is easily to be misdiagnosed as mere ureteropelvic junction obstruction and omitted the combined diagnosis of distal ureteral atresia. Dismembered pyeloplasty was done in local hospital after admission, however with the result of recurrent fever wh...

compared with 40 out of I56 patients (25.6%) who had oesophageal atresia with no other malformations. Persistent ductus arteriosus was the commonest lesion, followed by ventricular septal defect, secundum atrial septal defect, right-sided aortic arch, dextrocardia, anomalous right subclavian artery, and defects of the atrioventricular valves. Patients with cardiovascular malformations had a low...

Jejuno-ileal atresia occurs as a result of an intra-uterine ischemic insult to the midgut. Type III b (apple peel) or (Christmas tree) deformity consists of proximal jejunal atresia, absence of the superior mesenteric artery, agenesis of the dorsal mesentery, a significant loss of intestinal length and a large mesenteric defect [1]. After the surgery, whether short bowel syndrome is occurred or...