The Children's Cancer Study Group (CCSG) developed a staging system for patients with hepatoblastoma. Staging is usually performed by the surgeon at the time of initial surgery.
Parameters:
(1) extent of surgical resection
(2) spillage of tumor during surgery
(3) metastases to lymph nodes
(4) metastatic disease
Resection
Spillage
Lymph Nodes
Metastases
Stage
complete
none
none
none
I
microscopic residual disease
none
none
none
II
gross residual disease
NA
NA
none
III
NA
present
NA
none
III
NA
NA
present
none
III
NA
NA
NA
present
IV
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