Malignant primary @entity99 in @entity1 include lesions unique to the pediatric age group and others that are more common in adults. Important considerations when evaluating a @entity1 with a @entity96 are the age of the @entity1 , laboratory findings, and specific imaging features. The most common primary malignant @entity99 in the pediatric population, @entity4177 occurs almost exclusively in @entity1 younger than 5 years with no history of @entity409 . @entity4177 is associated with elevated serum a-fetoprotein ( @entity160 ) level and appears predominantly solid. @entity157 ( @entity157 ) is the most common @entity96 in older @entity1 , often with a history of @entity409 . @entity157 is associated with elevated serum @entity160 level and also appears as a solid mass. @entity189 occurs in adolescents without elevated @entity160 level and contains a @entity82 that usually does not enhance. @entity3491 occurs in young @entity1 , contains @entity2483 , and mimics a cyst at magnetic resonance imaging and computed tomography but appears solid at ultrasonography. @entity13904 is a multifocal @entity5 in older @entity1 with a distinctive imaging appearance of confluent peripheral nodules with adjacent capsular retraction. @entity5426 rarely occurs in young @entity1 and frequently shows evidence of @entity548 . @entity2875 of the biliary tree is unique to @entity1 , usually under 5 years of age, and frequently demonstrates an intraductal growth pattern. Knowledge of the pathologic features of these @entity5 and their imaging appearances can help radiologists offer an appropriate differential diagnosis and management plan.

From the archives of the AFIP: Pediatric liver masses: radiologic-pathologic correlation. Part 2. XXXX .

@entity1 :: ('9606', 'Species') :: ['patient', 'child', 'children', 'patients'] @entity82 :: ('MESH:D005355', 'Disease') :: ['T2-hypointense fibrous scar'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhage'] @entity96 :: ('MESH:D008113', 'Disease') :: ['liver tumor', 'malignant liver tumor'] @entity5 :: ('MESH:D009369', 'Disease') :: ['vascular tumor', 'tumors'] @entity3491 :: ('MESH:C580334', 'Disease') :: ['Undifferentiated (embryonal) sarcoma'] @entity409 :: ('MESH:D008107', 'Disease') :: ['liver disease'] @entity5426 :: ('MESH:D006394', 'Disease') :: ['Angiosarcoma'] @entity189 :: ('MESH:D002277', 'Disease') :: ['Fibrolamellar carcinoma'] @entity160 :: ('174', 'Gene') :: ['AFP'] @entity2875 :: ('MESH:D018233', 'Disease') :: ['Embryonal rhabdomyosarcoma'] @entity13904 :: ('MESH:D018323', 'Disease') :: ['Epithelioid hemangioendothelioma'] @entity157 :: ('MESH:D006528', 'Disease') :: ['HCC', 'Hepatocellular carcinoma'] @entity2483 :: ('MESH:C566443', 'Disease') :: ['cystic and mucoid components'] @entity99 :: ('MESH:D056486', 'Disease') :: ['hepatic tumor', 'hepatic tumors'] @entity4177 :: ('MESH:D018197', 'Disease') :: ['hepatoblastoma', 'Hepatoblastoma']
@entity5 :: (MESH:D009369,Disease) :: ['Malignant tumors']
