Imaging insights into pediatric liver masses: A comprehensive minireview for hepatology practice

Table 1 Definitions of pretreatment extent of disease stages used for staging of pediatric liver tumors

Stage	Definition
PRETEXT I	Three contiguous hepatic sections free of tumor. Tumor can only be present in left lateral or right posterior sections
PRETEXT II	Involvement of either one or two sections, with no tumor seen in two contiguous sections. Involvement limited to the caudate lobe is also PRETEXT II disease
PRETEXT III	Involves portions of both right and left lobes of the liver with involvement of two or three sections. Only one contiguous section remains tumor free
PRETEXT IV	Mostly multifocal disease with involvement of all four sections

PRETEXT: Pretreatment extent of disease.