UNLABELLED: In 4 years (1993-1996) 206 pts. with nephroblastoma were treated. All children were treated according to SIOP 93-01 protocol. Overall survival was 92%. In 27 cases hepatotoxic events occurred. In 10 cases, venoocclusive liver disease (VOD) was diagnosed. VOD is a syndrome associated with hepatomegaly, sudden weight gain or ascites and jaundice. It results from damage to the endothelium of hepatic venules and necrosis of central hepatocytes with subsequent proliferation of fibrous tissue and occlusion of the central hepatic veins. Dactinomycin is one of the drugs considered responsible for its development. Mean age of VOD patients was 4 yrs, however 3 of them were below 1 yr. In all cases, VOD occurred during postoperative chemotherapy (mean 16 th week of treatment). All patients received dactinomycin and vincristine. Five children with right kidney tumors underwent post-operative abdominal irradiation. Main VOD symptoms were hepatomegaly and ascites (80%). Hypertransaminasaemia, as well as, on ultrasound, gallbladder wall thickening and/or free abdominal fluid were observed. Median VOD duration was 27 days and its course was usually temporary and self-limiting. However, in 2 cases recurrent VOD episodes were noted. All children received supportive treatment only. In 6 cases, VOD resulted in chemotherapy delay or drug reductions, while in 4 others chemotherapy was completed preliminarily. Nevertheless it did not affect patients' outcome overall survival in VOD group was 90%. CONCLUSIONS: Total 5% VOD frequency is similar to other reports. Infants and children receiving abdominal irradiation seem to be at special risk of VOD development.
UNLABELLED: In 4 years (1993-1996) 206 pts. with nephroblastoma were treated. All children were treated according to SIOP 93-01 protocol. Overall survival was 92%. In 27 cases hepatotoxic events occurred. In 10 cases, venoocclusive liver disease (VOD) was diagnosed. VOD is a syndrome associated with hepatomegaly, sudden weight gain or ascites and jaundice. It results from damage to the endothelium of hepatic venules and necrosis of central hepatocytes with subsequent proliferation of fibrous tissue and occlusion of the central hepatic veins. Dactinomycin is one of the drugs considered responsible for its development. Mean age of VOD patients was 4 yrs, however 3 of them were below 1 yr. In all cases, VOD occurred during postoperative chemotherapy (mean 16 th week of treatment). All patients received dactinomycin and vincristine. Five children with right kidney tumors underwent post-operative abdominal irradiation. Main VOD symptoms were hepatomegaly and ascites (80%). Hypertransaminasaemia, as well as, on ultrasound, gallbladder wall thickening and/or free abdominal fluid were observed. Median VOD duration was 27 days and its course was usually temporary and self-limiting. However, in 2 cases recurrent VOD episodes were noted. All children received supportive treatment only. In 6 cases, VOD resulted in chemotherapy delay or drug reductions, while in 4 others chemotherapy was completed preliminarily. Nevertheless it did not affect patients' outcome overall survival in VOD group was 90%. CONCLUSIONS: Total 5% VOD frequency is similar to other reports. Infants and children receiving abdominal irradiation seem to be at special risk of VOD development.
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