As expected there are a number of different staging systems for hepatoblastoma.
Staging
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PRETEXT grouping system of pediatric liver tumors
- not specific to hepatoblastoma; used in all pediatric liver tumors
- Intergroup staging system
- specific for hepatoblastoma (see below)
Intergroup staging system
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stage I
- complete surgical resection
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stage II
-
IIa
- complete macroscopic surgical resection
- intrahepatic residual microscopic disease
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IIb
- complete macroscopic surgical resection
- extrahepatic residual microscopic disease
-
IIa
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stage III
-
IIIa
- incomplete surgical resection with macroscopic residual AND / OR
- significant tumor spill AND / OR
- positive lymph node disease
-
IIIb
- tumor not resected
-
IIIa
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stage IV
-
IVa
- distant metastatic disease
- primary tumor completely resected
-
IVb
- distant metastatic disease
- primary tumor incompletely resected
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IVa