Flashcards Davies Abdomen 3
located at the hepatic hilum at the junction of the right and left hepatic ducts
Klatskin tumor
Where is a Klastkin tumor located?
at the hepatic hilum at the junction of the right and left hepatic ducts
Klatskin tumor is a specific type of:
cholangiocarcinoma
pneumobilia
air in the biliary tree
air in the biliary tree
pneumobilia
Describe the sonographic appearance of pneumobilia
variable length echogenic foci in the distribution of the biliary tree, resulting in acoustic shadowing and reverberation (comet tail) artifacts
Pneumobilia is most commonly seen where?
in the hilum of the liver, as this is the direction of bile flow
Most commonly seen in the hilum of the liver, as this is the direction of bile flow
Pneumobilia
What is the most common reason for pneumobilia
most commonly seen after an endoscopic retrograde cholangiopancreatogram (CEAP)
Reasons for pneumobilia
(most common)- endoscopic retrograde cholagiopancreatogram (CEAP)
surgically created biliary-enteric anastamosis
incompetence of the Sphincter of Oddi
wall erosion by a gallstone or ulcer into the common bile duct
Usually occur in Asian women
Choledochal cyst
Choledochal cyst symptoms
pain
jaundice
abdominal mass
What are the sonographic features associated with a choledochal cyst?
two cyst-like structures in the right upper quadrant. These are the gallbladder and the dilated common bile duct
Dilated intrahepatic biliary tree
What is the sonographic appearance of Caroli’s disease?
saccular, communicating intrahepatic bile duct dilatation
What other genetically acquired conditions are associated with Caroli’s disease?
infantile polycystic kidney disease
congenital hepatic fibrosis
choledochal cysts
infantile polycystic kidney disease, congenital hepatic fibrosis, and choledochal cysts are genetically acquired conditions that are associated with ______
Caroli’s disease
What is a Courvoisier gallbladder?
enlarged, nondiseased gallbladder, associated with an extrinsic obstruction of the distal common bile duct.
Courvoisier gallbladder is associated with an extrinsic obstruction of the ______
distal common bile duct
Describe the sonographic appearance of milk of calcium bile.
fluid-fluid level that produces acoustic shadowing
Bile duct carcinoma is also known as
cholangiocarcinoma
Cholangiocarcinoma is also known as
bile duct carcinoma
What predisposing conditions are associated with bile duct carcinoma?
ulcerative colitis
sclerosing cholangitis
Caroli’s disease
choledochal cyst
parasitic infections
What is the name of the cholangiocarcinoma located at the hepatic hilum?
Klatskin tumor
Cholangiocarcinoma is commonly located in the ____ and the ____
common hepatic duct
common bile duct
_______ is commonly located in the common hepatic duct and the common bile duct
cholangiocarcinoma
A ______ is a specific type of cholangiocarcinoma located at the hepatic hilum
Klatskin tumor
A Klatskin tumor is a specific type of cholangiocarcinoma located at the _____
hepatic hilum
With a ______, intrahepatic bile dut dilatation should be seen without extrahepatic bile duct dilatation
Klatskin tumor
The head of the pancreas is ____ to the inferior vena cava.
anterior
The head of the pancreas is _____ to the second portion of the duodenum.
medial
The common bile duct is _____ to the head of the pancreas.
posterolateral
The gastroduodenal artery is ____ to the head of the pancreas.
anteriolateral
The superior mesenteric artery and vein are _____ to the neck of the pancreas.
posterior
The uncinate process is _____ to the superior mesenteric artery and vein.
posterior
The aorta is _____ to the body of the pancreas.
posterior
The celiac axis arises from the aorta ____ to the pancreas.
superior
The gastroduodenal artery and common bile duct run ____ to the first portion of the duodenum.
posterior
The splenic vein is ____ to the pancreas.
posteroinferior
The superior mesenteric artery arises from the aorta ____ to the pancreas.
inferior
The superior mesenteric artery and vein are ____ to the uncinate process of the pancreas.
anterior
The superior mesenteric artery and vein are ____ to the third portion of the duodenum.
anterior
The superior mesenteric vein is to the _____ of the superior mesenteric artery.
right
The portal vein is the result of the combination of the ____ and the _____
superior mesenteric vein
splenic vein
What are the two most common causes of pancreatitis?
alcohol abuse
biliary calculi
What is the sonographic appearance of acute pancreatitis?
mild acute pancreatitis- normal pancreas
increasing severity pancreatitis- decreased echogenicity and increased gland size
What are sonographic signs of chronic pancreatitis?
small echogenic gland
calcifications
pancreatic duct dilatation
pseudocyst formation
progressive, irreversible, destruction of the pancreas
chronic pancreatitis
What is chronic pancreatitis?
progressive, irreversible, destruction of the pancreas
Sonographically seen as a solid focal hypoechoic mass typically in the head of the pancreas
pancreatic adenocarcinoma
What findings are associated with pancreatic adenocarcinoma?
dilated biliary system
dilated pancreatic duct
liver metastases
ascites
lymphadenopathy
pseudocyst formation
What sign is associated with an adenocarcinoma of the pancreatic head resulting in extrinsic compression of the common bile duct and an enlarged gallbladder?
Courvoisier’s sign
palpable, nontender gallbladder due to an adenocarcinoma of the pancreatic head obstructing the biliary tract resulting in jaundice
Courvoisier’s sign
Is the pancreas intraperitoneal or retroperitoneal?
retroperitonal
The pancreas is located between the ______ and the _____
second portion of the duodenum
splenic hilum
What space in the retroperitoneum is the pancreas located?
anterior pararenal space
Name the 5 different parts of the pancreas
head
neck
body
tail
uncinate process
What is the endocrine function of the pancreas?
secretion of insulin
The endocrine portion of the pancreas consists of the ______ which secrete ______
islet cells of Langerhans
insulin
What are the branches of the celiac axis?
left gastric artery
common hepatic artery
splenic artery
What are the branches of the common hepatic artery?
hepatic proper artery
gastroduodenal artery
What two veins join to for the main portal vein?
superior mesenteric vein
splenic vein
What are islet cell tumors?
small, well circumscribed masses, usually found within the pancreatic body and tail
small, well-circumscribed masses, usually found within the pancreatic body and tail
islet cell tumors
Are islet cell tumors benign or malignant?
benign
Most common benign tumors of the pancreas
islet cell tumors
Name the two most common islet cell tumors
insulinoma
gastrinomas
______ are characterized by hyperinsulinism and hypoglycemia
insulinomas
insulinomas are characterized by _____ and _____
hyperinsulinism
hypoglycemia
____ are associated with gastric hypersecretions and peptic ulcer disease (Zollinger-Ellison syndrome)
Gastrinomas
Gastrinomas are associated with _____ and _____
gastric hypersecretions
peptic ulcer disease (Zollinger-Ellison syndrome)
Name six tumors associated with multiple endocrine neoplasia syndrome
pituitary adenoma
parathyroid adenoma
medullary thyroid carcinoma
pancreatic islet cell tumors
pheochromocytoma
ganglioneuromatosis
What are pancreatic pseudocysts?
collections of pancreatic fluid encapsulated by fibrous tissue
collections of pancreatic fluid encapsulated by fibrous tissue
pancreatic pseudocysts
What are some causes of pancreatic pseudocysts?
acute pancreatitis
chronic pancreatitis
trauma
pancreatic cancer
Name five possible locations of pancreatic pseudocysts
pancreas (most common)
intraperitoneal
retroperitoneal
intraparenchymal (within liver, spleen, kidney)
thorax (passage through diaphragm)
What are four functions of the spleen?
breakdown of hemoglobin
formation of bile pegment
formation of antibodies
a reservoir for blood
The stomach is _____ to the splenic hilum
anterior and medial
The tail of the pancreas is ____ to the stomach
posterior
The left kidney is ____ to the spleen.
inferior and medial
The tail of the pancreas is _____ to the upper pole of the left kidney
anterior
Name five structures that appear as cystic splenic masses
cystic degeneration of infarcts or hematomas
cysts associated with adult polycystic kidney disease
parasitic cysts of the spleen (echonicoccals cysts)
epidermoid cyst of the spleen
pancreatic pseudocysts
Describe the sonographic appearance of a splenic infarct
peripheral wedge-shaped hypoechoic lesion
What type of hematoma is the result of splenic trauma in which the splenic capsule remains intact
intraparenchymal or subcapsular hematoma
What type of hematoma is the result of splenic trauma in which the splenic capsule ruptures
perisplenic or intraperitoneal hematoma
True pancreatic cysts are uncommon. Multiple pancreatic cysts are associated with what two syndromes?
autosomal dominant (adult) polycystic kidney disease
Von Hippel-Lindau syndrome
characterized by viscous secretions leading to pancreatic insufficiency
cystic fibrosis
When severely affected, what is the sonographic appearance of the pancreas in a patient with cystic fibrosis?
increased echogenicity of the pancreatic parenchyma
Name four sonographic indications of portal vein thrombosis
echogenic thrombus within vessel lumen
an increase in portal vein diameter
portosystemic collateral circulation
cavernous transformation
Name 3 notable structures posterior to the kidneys
diaphragm
quadratus lumborum muscle
psoas muscle
What is the orientation of structures that enter and exit the renal hilum?
the vein exits anteriorly
the artery enters between the vein and ureter
the ureter exits posteriorly
The renal vein exits _____ at the renal hilum
anteriorly
The renal artery enters between the _____ and _____
renal vein
ureter
The ureter exits _____ to the renal hilum.
posteriorly
The main renal artery branches from the _____
aorta
Upon entering the hilum of the kidney, the main renal artery divides into five ______ arteries, which in turn divide into ______ arteries.
segmental
interlobar
The _____ arteries are seen between the medullary pyramids.
interlobar
The interlobar arteries are seen between the ______.
medullary pyramids
At the base of the medullary pyramids, the _____ arteries branch perpendicular from the interlobar arteries.
arcuate
At the base of the medullary pyramids, the arcuate arteries branch perpendicular from the ______ arteries.
interlobar
The _____ arteries are seen running parallel to the renal capsule.
arcuate