25- Pediatric Explains Flashcards
What is the most common cause of bronchogenic cysts?
Bronchogenic cysts most commonly arise from anomalous development of the ventral foregut.
Where do bronchogenic cysts typically occur?
Bronchogenic cysts often lie near the midline and are commonly found in the region of the carina.
Are bronchogenic cysts usually single or multiple?
While most bronchogenic cysts are single, multiple cysts can also occur.
What are the common symptoms of bronchogenic cysts in the neonatal period?
Bronchogenic cysts may be asymptomatic or present with respiratory symptoms early in the neonatal period.
Where do bronchogenic cysts rank among the different types of foregut cysts in the middle mediastinum?
Bronchogenic cysts are the second most common type of foregut cysts (after enterogenous cysts) in the middle mediastinum.
How often are bronchogenic cysts diagnosed before the age of 15?
Up to 50% of bronchogenic cyst cases are diagnosed prior to 15 years of age.
What imaging technique is recommended for diagnosing bronchogenic cysts?
Once bronchogenic cysts are suspected, a CT scan should be performed for confirmation.
What is the ideal treatment for bronchogenic cysts?
Thoracoscopic resection is considered the ideal treatment for bronchogenic cysts.
At what age can very young babies undergo surgical treatment for bronchogenic cysts?
Very young babies can be operated on once they reach six weeks of age.
What are the components of the umbilicus during embryonic development?
During development, the umbilicus has two umbilical arteries and one umbilical vein.
What arteries are the umbilical arteries continuous with?
The umbilical arteries are continuous with the internal iliac arteries.
What does the umbilical vein connect to after birth?
After birth, the umbilical vein is continuous with the falciform ligament (ductus venosus).
What happens to the umbilical cord after birth?
The umbilical cord dessicates and separates, and the umbilical ring closes.
What percentage of neonates may have an umbilical hernia?
Up to 20% of neonates may have an umbilical hernia.
Are umbilical hernias more common in premature infants?
Yes, umbilical hernias are more common in premature infants.
Is strangulation of an umbilical hernia common?
No, strangulation of an umbilical hernia is rare.
Do umbilical hernias typically close spontaneously?
Yes, the majority of umbilical hernias will close spontaneously, although it may take between 12 months and three years.
What causes omphalitis, an infection of the umbilicus?
Omphalitis is commonly caused by infection with Staphylococcus aureus.
Why is omphalitis considered a potentially serious condition?
Omphalitis can spread rapidly through the umbilical vessels, putting neonates at risk of portal pyaemia and portal vein thrombosis.
How is umbilical granuloma typically treated?
Umbilical granulomas, characterized by cherry red lesions, can often be treated with chemical cautery using topically applied silver nitrate.
What is the most common presentation of persistent vitello-intestinal duct?
Persistent vitello-intestinal duct typically presents as an umbilical discharge containing small bowel content.
What is persistent urachus?
Persistent urachus is characterized by urinary discharge from the umbilicus due to the persistence of the urachus, which attaches to the bladder.
How are persistent vitello-intestinal ducts managed?
Persistent vitello-intestinal ducts are best imaged using a contrast study to evaluate the anatomy and are managed through laparotomy and surgical closure.
What is the estimated prevalence of biliary atresia?
Biliary atresia affects approximately 1 in 17,000 individuals.
What causes progressive liver damage in biliary atresia?
The lumen of the biliary tree is obliterated by an inflammatory cholangiopathy, leading to progressive liver damage.
What are the clinical features of biliary atresia?
In the first few weeks of life, infants with biliary atresia appear well. They typically have no family history of liver disease. Jaundice persists for more than 14 days in term infants (or more than 21 days in preterm infants). Other features include pale stool and yellow urine (which may appear colorless in babies). Biliary atresia is also associated with cardiac malformations, polysplenia, and situs inversus.
What investigations are commonly performed for biliary atresia?
Investigations for biliary atresia include measuring conjugated bilirubin levels (as opposed to unconjugated bilirubin seen in physiological or breast milk jaundice), ultrasound of the liver (to exclude extrahepatic causes and identify potential gallbladder changes), and a hepato-iminodiacetic acid radionuclide scan (which typically shows good uptake but no excretion).
What is the initial management approach for biliary atresia?
Nutritional support is an essential component of management for individuals with biliary atresia.
Why is early recognition of biliary atresia important?
Early recognition of biliary atresia is crucial to prevent the need for liver transplantation.
What surgical procedure is commonly performed for biliary atresia?
The Roux-en-Y portojejunostomy, also known as the Kasai procedure, is often performed as the initial surgical intervention for biliary atresia.
When is a liver transplant considered for biliary atresia patients?
If the Kasai procedure fails or if biliary atresia is recognized late, a liver transplant becomes the only viable option.
What are the common causes of intestinal obstruction with bilious vomiting in neonates?
Common causes include duodenal atresia, malrotation with volvulus, jejunal/ileal atresia, meconium ileus, and necrotizing enterocolitis.
What is the incidence of duodenal atresia?
Duodenal atresia occurs in approximately 1 in 5000 neonates, with a higher incidence in individuals with Down syndrome.
When does duodenal atresia typically present?
Duodenal atresia usually presents a few hours after birth.
What radiographic sign is associated with duodenal atresia?
The “double bubble sign” is seen on abdominal X-ray (AXR), and a contrast study may be performed to confirm the diagnosis.
What is the recommended treatment for duodenal atresia?
Duodenoduodenostomy is the surgical procedure commonly performed for duodenal atresia.
What is the main cause of malrotation with volvulus in neonates?
Malrotation with volvulus is usually caused by incomplete rotation during embryogenesis.
When does malrotation with volvulus typically present?
Malrotation with volvulus usually presents between 3 and 7 days after birth, and in severe cases, it can result in peritoneal signs and hemodynamic instability.
What imaging studies can help diagnose malrotation with volvulus?
An upper gastrointestinal contrast study may show abnormal positioning of the duodenojejunal (DJ) flexure, and an ultrasound may reveal abnormal orientation of the superior mesenteric artery (SMA) and superior mesenteric vein (SMV).
What is the incidence of jejunal/ileal atresia in neonates?
Jejunal/ileal atresia occurs in approximately 1 in 3000 neonates.
What is the surgical procedure of choice for malrotation with volvulus?
The Ladd’s procedure is the recommended surgical treatment for malrotation with volvulus.
When does jejunal/ileal atresia typically present?
Jejunal/ileal atresia usually presents within 24 hours of birth.
What radiographic finding is associated with jejunal/ileal atresia?
Abdominal X-ray (AXR) typically shows air-fluid levels.
What is the recommended treatment for jejunal/ileal atresia?
Laparotomy with primary resection and anastomosis is the standard treatment for jejunal/ileal atresia.
What is the incidence of meconium ileus in neonates?
Meconium ileus occurs in approximately 1 in 5000 neonates, but the incidence is higher in babies with cystic fibrosis (15-20%).
When does meconium ileus typically present?
Meconium ileus typically presents within the first 24-48 hours of life, characterized by abdominal distension and bilious vomiting.
What radiographic finding is associated with meconium ileus?
Abdominal X-ray (AXR) shows air-fluid levels, and a sweat test is performed to confirm cystic fibrosis.
What is the recommended treatment for meconium ileus?
Surgical decompression is performed, and in cases with serosal damage, segmental resection may be necessary.
What is the incidence of necrotizing enterocolitis (NEC) in neonates?
Necrotizing enterocolitis occurs in up to 2.4 per 1000 births, with increased risks in premature infants and those with intercurrent illness.
When does necrotizing enterocolitis typically present?
Necrotizing enterocolitis usually presents during the second week of life.
What radiographic findings are associated with necrotizing enterocolitis?
Abdominal X-ray (AXR) shows dilated bowel loops, pneumatosis, and portal venous air.
What is the recommended management approach for necrotizing enterocolitis?
Conservative and supportive measures are used for non-perforated cases, while laparotomy and resection are performed in cases with perforation or ongoing clinical deterioration.
What is the gender predilection for pyloric stenosis?
Pyloric stenosis is more common in males than females.
What percentage of cases of pyloric stenosis have a family history in parents?
Approximately 5-10% of cases of pyloric stenosis have a family history in parents.
What are the typical symptoms of pyloric stenosis?
Projectile, non-bile stained vomiting usually occurs at 4-6 weeks of life.
How is the diagnosis of pyloric stenosis made?
The diagnosis of pyloric stenosis can be made through a test feed or an ultrasound (USS).
What is the recommended treatment for pyloric stenosis?
The recommended treatment for pyloric stenosis is Ramstedt pyloromyotomy, which can be performed using an open or laparoscopic approach.
How may acute appendicitis present in young children?
In young children, acute appendicitis may present atypically.
At what age is acute appendicitis uncommon in children?
Acute appendicitis is uncommon in children under 3 years of age.
What are the typical symptoms of mesenteric adenitis?
Mesenteric adenitis is characterized by central abdominal pain and symptoms of upper respiratory tract infection (URTI).
What is the recommended management approach for mesenteric adenitis?
Conservative management is typically used for mesenteric adenitis.
What is intussusception?
Intussusception refers to the telescoping of one segment of the bowel into another.
At what age does intussusception commonly occur?
Intussusception commonly occurs between 6 and 9 months of age.
What are the typical symptoms of intussusception?
Colicky pain, diarrhea and vomiting, a sausage-shaped mass in the abdomen, and red jelly-like stools are typical symptoms of intussusception.
What is malrotation?
Malrotation refers to the abnormal positioning of the intestines, particularly the high placement of the cecum at the midline.
How is intussusception treated?
Intussusception is treated through a reduction procedure using air insufflation.
What conditions are associated with malrotation?
Malrotation may be associated with exomphalos, congenital diaphragmatic hernia, and intrinsic duodenal atresia.
What complications can occur with malrotation?
Malrotation may lead to the development of volvulus, which can cause bile-stained vomiting in infants.
How is malrotation diagnosed?
The diagnosis of malrotation is made through an upper gastrointestinal (GI) contrast study and an ultrasound (USS).
What is the recommended treatment for malrotation?
The treatment for malrotation is usually a laparotomy, and if volvulus is present or at high risk of occurring, a Ladd’s procedure is performed.
What is Hirschsprung’s disease?
Hirschsprung’s disease is a condition characterized by the absence of ganglion cells in the myenteric and submucosal plexuses of the intestines.
What is the incidence of Hirschsprung’s disease in births?
Hirschsprung’s disease occurs in approximately 1 in 5000 births.
How is Hirschsprung’s disease diagnosed?
The diagnosis of Hirschsprung’s disease is made through a full-thickness rectal biopsy.
What are the typical symptoms of Hirschsprung’s disease?
Delayed passage of meconium and abdominal distension are typical symptoms of Hirschsprung’s disease.
What is the initial treatment for Hirschsprung’s disease?
Initial treatment for Hirschsprung’s disease involves rectal washouts. Ultimately, an anorectal pull-through procedure is performed.
What is oesophageal atresia associated with?
Oesophageal atresia is associated with tracheo-oesophageal fistula and polyhydramnios.
What are the potential symptoms of oesophageal atresia?
Oesophageal atresia may present with choking and cyanotic spells following aspiration.
What is the majority cause of meconium ileus?
The majority of cases of meconium ileus are associated with cystic fibrosis.
What is VACTERL associations?
VACTERL associations are commonly associated with oesophageal atresia.
What are the typical symptoms of meconium ileus?
Delayed passage of meconium and abdominal distension are typical symptoms of meconium ileus.
What imaging findings may be seen in meconium ileus?
X-rays may not show a fluid level as the meconium is viscid. PR contrast studies may help dislodge meconium plugs and be therapeutic.
What lab finding is increased in biliary atresia?
Biliary atresia is associated with increased conjugated bilirubin levels.