title: An ultrasound study of portal hypertension in children.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004932:Esophageal and Gastric Varices / Q000473:pathology; D006801:Humans; D006975:Hypertension, Portal / Q000473:pathology*; D007223:Infant; D007231:Infant, Newborn; D011184:Postoperative Period; D014463:Ultrasonography