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Childhood Liver Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Treatment Option Overview

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Early involvement with an experienced pediatric liver surgeon is especially important in patients with PRETEXT stage 3 or 4 disease, involvement of major liver vessels, and low alpha-fetoprotein (AFP) levels.[7] While vascular involvement was initially thought to be a contraindication to resection, experienced liver surgeons are able to perform aggressive approaches avoiding transplantation.[7,8]; [9][Level of evidence: 3iiA] Accomplishing a complete resection is imperative because rescue transplant of incompletely resected patients has an inferior outcome compared with patients who are transplanted as the primary surgical therapy.[10]

The decision as to which surgical approach to use depends on many factors including the following:

  • PRETEXT stage.
  • Size of the primary tumor.
  • Presence of multifocal hepatic disease.
  • Vascular involvement.
  • AFP levels.
  • Whether preoperative chemotherapy may convert an unresectable tumor into a potentially resectable tumor.
  • Whether hepatic disease meets surgical and histopathologic criteria for orthotopic liver transplantation.

In North American clinical trials, the Children's Oncology Group (COG) has recommended that surgery be performed initially if a complete resection can be accomplished (refer to the Postsurgical Staging for Childhood Liver Cancer section of this summary for more information). COG is investigating the use of PRETEXT stage at diagnosis and after chemotherapy to determine the optimal surgical approach and its timing (COG-AHEP0731).

Orthotopic liver transplantation

Liver transplantation has recently been associated with significant success in the treatment of children with unresectable hepatic tumors.[11,12,13,14][Level of evidence: 3iiA] A review of the world experience has documented a posttransplant survival rate of 70% to 80% for children with hepatoblastomas.[10,15,16] Intravenous invasion, positive lymph nodes, and contiguous spread did not have a significant adverse effect on outcome. It has been suggested that adjuvant chemotherapy following transplant may decrease the risk of tumor recurrence.[17]

There are discrepant results on the outcomes for patients with lung metastases at diagnosis who undergo orthotopic liver transplantation following complete resolution of lung disease in response to pretransplant chemotherapy. Some studies have reported favorable outcomes for this group of patients,[10] while others have noted high rates of hepatoblastoma recurrence.[16,18] All of these studies are limited by small patient numbers; further study is needed to better define outcomes for this subset of patients.

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