Pediatric Pathology Flashcards
What is the age of an infant?
one month to 2 years
What is the age of a neonate?
birth to one month
What is the age of a child?
two to 12 years of age
What is the age of an adolescent?
12 -16 years
What is the most common indication for imaging the biliary tree?
Jaundice
What is transient jaundice?
it comes and goes during the first few weeks of life
What are some of the common causes of jaundice?
choledochal cyst
biliary atresia
hepatitis
What kind of obstruction do you have if you have choledochal cyst, biliary atresia, or perforation of ducts?
extrahepatic obstruction
If you have hepatitis or metabolic disease what kind of obstruction might you have?
intrahepatic obstruction - hepatocellular
What are the symptoms of choledochal cyst?
palpable mass
weight loss
jaundice and pain
What is a choledochal cyst?
abnormal cystic dilation of the biliary tree
What are the types of choledochal cyst?
fusiform - dilatation of the CBD
Cystic structures communication with the ducts
dilation of the intra nd extra hepatic ducts
CAROLI’S disease with intrahepatic duct dilation
NOT A CYST BUT A DILATION OF DUCTS
Out pouching of ducts IN the liver is…
Caroli’s disease
What is neonatal hepatitis?
infection
hepatomegaly
Metabolic, idopathic, via vagina, catherter
how does hepatitis look on a neonate?
increased in echogenicity
decreased visualization of vessels
(starry night doesn’t work in these cases, already echogenic)
What is biliary atresia?
narrowing or underdevelopment of biliary ductal system
What are the symptoms of biliary atresia?
jaundice
acholic (clay like) stools
distended abdomen
absent or small GB
slight decrease in visualization of portal
What is the sign in histology for biliary atresia?
“triangular cord” sign
US sees a echogenic, thick cord anterior to the PV
What is polysplenia syndrome?
heart defects and situs abnormalities
spleen abnormalities
biliary atresia
KASI OPERATION
What is the Kasai operation?
anastomosis of liver ducts to intestine
What kind of Nuc Med scan do you do if you have a jaundice problem?
Hepatic Scintigraphy
What is hemangioendothelioma?
most common benign vascular tumor in childhood
hepatomegaly
regresses by 12-18 months
multiple hypoechoic lesions/ heterogeneous