Select the patient's risk level to begin.
Benign features: sharp margin, homogeneous low attenuation (<= 20 HU),
or characteristic features of hemangioma, FNH, perfusion anomaly/focal fat.
Suspicious features: ill-defined margins
heterogeneous attenuation, mural thickening or nodularity, thick septa, attenuation > 20 HU, enhancement > 20 HU.
Flash-filling” feature: uniform hyperattenuation relative to hepatic parenchyma on arterial-phase/early portal venous
phase postcontrast imaging. If additional postcontrast phases are available to
characterize lesion as benign (eg, hemangioma) or suspicious (eg, hepatocellular carcinoma), the lesion should
be placed in one of those respective categories.
Low risk features: no mural nodule, wall thickening, or calcification.
Normal caliber main pancreatic duct.
High risk features: Presence of mural nodule, thickened wall, peripheral calcification, or
main pancreatic duct >= 7 mm.
Select the patient's risk level to begin. Normal size and number lymph nodes need no followup and are not covered here.
Select the patient's age to begin. Note that for thyroid classification purposes, young age actually denotes higher risk. Young age
in the scope of this thyroid algorithm is < 35 years.
Inputted data have been reset and output cleared.