Morgan and Superina classification of congenital extrahepatic portosystemic shunts
Citation, DOI, disclosures and article data
At the time the article was created Patricia O'Gorman had no recorded disclosures.
View Patricia O'Gorman's current disclosuresAt the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose.
View Rohit Sharma's current disclosures- Morgan classification of congenital extrahepatic portosystemic shunts
The Morgan and Superina classification of congenital extrahepatic portosystemic shunts is based on the absence (type 1) or presence (type 2) of intrahepatic portal blood supply 2.
On this page:
Usage
This classification system is widely used (c. 2020) 2, although there is evidence that all congenital extrahepatic portosystemic shunts have some portal blood supply even if very hypoplastic 3.
Classification
-
type 1: complete diversion of portal blood into the inferior vena cava with congenital absence of the portal vein
1a: superior mesenteric vein and splenic vein do not join to form a confluence
1b: superior mesenteric vein and splenic vein joint to form a confluence
type 2: intact portal vein (may be hypoplastic) with some portal flow diverted to the inferior vena cava through side-to-side extrahepatic communication 3
History and etymology
Morgan and Superina proposed this classification in 1994 1:
See also
References
- 1. Morgan G, Superina R. Congenital absence of the portal vein: two cases and a proposed classification system for portasystemic vascular anomalies. Journal of pediatric surgery. 29 (9): 1239-41. Pubmed
- 2. Tang H, Song P, Wang Z et al. A Basic Understanding of Congenital Extrahepatic Portosystemic Shunt: Incidence, Mechanism, Complications, Diagnosis, and Treatment. Intractable Rare Dis Res. 2020;9(2):64-70. doi:10.5582/irdr.2020.03005 - Pubmed
- 3. Rajeswaran S, Johnston A, Green J et al. Abernethy Malformations: Evaluation and Management of Congenital Portosystemic Shunts. J Vasc Interv Radiol. 2020;31(5):788-94. doi:10.1016/j.jvir.2019.08.007 - Pubmed
Incoming Links
Related articles: Pathology: Hepato-Pancreato-Biliary
- liver
- depositional disorders
- infection and inflammation
- liver abscess
- hepatic hydatid infection
- cirrhosis
- hepatitis
- cholecystitis
- cholangitis
- malignancy
- liver and intrahepatic bile duct tumors
- benign epithelial tumors
- hepatocellular hyperplasia
- hepatocellular adenoma
- hepatic/biliary cysts
- benign nonepithelial tumors
- primary malignant epithelial tumors
- hepatocellular carcinoma
- hepatocellular carcinoma variants
-
cholangiocarcinoma
- intra-hepatic
- mass-forming type
- periductal infiltrating type - Klatskin tumors
- intraductal growing type
- extra-hepatic/large duct type
- intra-hepatic
- biliary cystadenocarcinoma
- combined hepatocellular and cholangiocarcinoma
- hepatoblastoma
- undifferentiated carcinoma
- primary malignant nonepithelial tumors
- hematopoietic and lymphoid tumors
- primary hepatic lymphoma
- hepatic myeloid sarcoma (hepatic chloroma)
- secondary tumors
- miscellaneous
- adrenal rest tumors
- hepatic carcinosarcoma
- hepatic fibroma
- hepatic hemangioma
- hepatic Kaposi sarcoma
- hepatic lipoma
- hepatic mesenchymal hamartoma
- hepatic myxoma
- hepatic rhabdoid tumor
- hepatic solitary fibrous tumor
- hepatic teratoma
- hepatic yolk sac tumor
- inflammatory myofibroblastic tumor (inflammatory pseudotumor)
- nodular regenerative hyperplasia
- pancreatic rest tumors
- primary hepatic carcinoid
- benign epithelial tumors
- liver and intrahepatic bile duct tumors
- metabolic
- trauma
-
vascular and perfusion disorders
- portal vein related
- hepatic artery related
- hepatic veins related
- inferior vena cava related
- other
- third inflow
- liver thrombotic angiitis
- infra diaphragmatic total anomalous pulmonary venous return (TAPVR)
- hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu disease)
- pancreas
-
pancreatic neoplasms
- cystic neoplasm (cystic pancreatic mass differential diagnosis)
- solid neoplasm
- non-epithelial pancreatic neoplasms
- others
- simple pancreatic cyst
-
pancreatitis (mnemonic for the causes)
- acute pancreatitis
- chronic pancreatitis
- Ascaris-induced pancreatitis
- tropical pancreatitis
- autoimmune pancreatitis
- emphysematous pancreatitis
- hypertriglyceridemia-induced pancreatitis
- hereditary pancreatitis
- pancreatitis associated with cystic fibrosis
- pancreaticopleural fistula
- segmental pancreatitis
- pancreatic atrophy
- pancreatic lipomatosis
- pancreatic trauma
- pancreatic transplant
-
pancreatic neoplasms
- gallbladder and biliary
- congenital malformations and anatomical variants
- gallstones
- gallbladder inflammation
- bile ducts inflammation
- gallbladder wall abnormalities
- other gallbladder abnormalities
- bile duct dilatation (differential)
- bile duct wall thickening (differential)
- bile ducts neoplasms