Hepatoportal System Flashcards
Portal venous system drains
digestive system, pancreas, and spleen
Portal vein formed by
splenic vein, SMV (gastric/pancreatic veins, IMV, coronary vein, pyloric vein)
Portal confluence is formed by
union of SMV/SV post. to neck of pancreas
Normal size of MPV
11mm+-2
SMV drains
areas supplied by SMA (small intestine)
SMV is to the right of and anterior to
SMA
SMV ascends from
right iliac fossa
SMV is anterior to
IVC, 3rd part duodenum, uncinate process
Splenic vein formed of
IMV, small branches from stomach and pancreas
splenic vein lies
posterior to pancreas inferior to splenic artery
IMV drains
areas supplied by IMA (ascending and sigmoid colon, rectum, left 1/3 transverse colon)
IMV joins
splenic vein (not imaged)
SMV size
6-7mm
SV size
4-6mm
Porta hepatic is the
hepatic hilum
Porta hepatis is superior to
portal confluence
Space between MPV and IVC
epiploic foramen
MPV travels in the
hepatoduodenal ligament (intraperitoneal)
MPV landmarks
posterior to CBD, HAP, GDA, 1st part duodenum
anterior to IVC
superior to pancreatic head
inferior to caudate lobe
Porta hepatis sonographic indicator
MPV bifurcating into LPV and RPV
Portal confluence landmarks
posterior to pancreatic neck
anterior to uncinate process
MPV formed by
left and right gastric veins (coronary and pyloric) (not visualized)
MPV branches
right (ant post) and left (medial lateral) PV
RPV receives and supplies
cystic vein, right and caudate lobes
Which PV is shorter?
right
is RPV well imaged?
yes, anterior branch
LPV 2 parts and 2 branches
horizontal/initial, ascending, medial, lateral
