RID35234 Frostberg inverted-3 sign

synonym Frostberg inverted-three sign Frostberg sign inverted 3 sign inverted three sign

definition Medial wall of 2nd portion of duodenum retracted medially to resemble an inverted 3 on upper GI series; middle point is where pancreatic and bile ducts insert into papilla. Suggests pancreatic carcinoma, acute pancreatitis, or postbulbar ulcer.