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Perilongo G, Brown J, et al, for the Liver Tumour Study Group of the International Society of Paediatric Oncology (SIOP)
The prognosis of children who are affected by hepatoblastoma (HB) that presents with lung metastases has always been considered very poor. In light of the overall improvement in the survival of HB patients since the introduction of cisplatin (CDDP) in the therapeutic armament of this tumor, the question has been raised whether patients with metastatic HB also would benefit from this drug. The purpose of the current study was to address this issue by analyzing the treatment outcome of those patients presenting with metastases who entered into the first HB study on childhood liver tumors conducted by the International Society of Paediatric Oncology (SIOPEL 1).
SIOPEL 1 was a prospective, international, multicentric, single-arm study based on preoperative chemotherapy that was open to patient registration from January 1990 to February 1994. After undergoing a biopsy, patients received four courses of CDDP (80 mg/m(2) in a 24-hour, continuous infusion) on Day 1 followed by doxorubicin (60 mg/m(2) in a 48-hour, continuous infusion) on Days 2 and 3 (PLADO). Surgery was performed after four courses of PLADO and was followed by two more courses. Untreated children age < 16 years with biopsy-proven HB were eligible for the study. Metastatic spread was assessed by chest X-ray and, where available, lung computed tomography scan.
Thirty-one of 154 children that entered into the trial presented with metastases. Eight children presently are alive with no evidence of disease (NED) after being treated with protocol therapy only (median follow-up, 60 months); nine children are alive with NED after having failed PLADO and having been rescued with alternative therapies (median follow-up, 80 months). The 5-year overall and event free survival rates for these children were 57% (95% confidence interval, 39-75%) and 28% (95% confidence interval, 12-44%), respectively. Persistent lung disease was the main reason for PLADO failure (17 of 23 patients; 74%).
The SIOPEL 1 therapeutic strategy seems to cure 25% of the HB patients who present with metastases. However, further chemotherapy and the use of thoracotomies still can save significant numbers of these children. Copyright 2000 American Cancer Society.
Rheinische Friedrich- Wilhelms- Universität Bonn