Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0035412 (rhabdomyosarcoma)
 6,156 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Between 1965 and 1988, at the Children's Hospital of Buenos Aires, 22 children developed two successive malignant tumors of different histology. The first tumor was diagnosed between 3 months and 12 years of age: 13 retinoblastoma, 2 rhabdomyosarcoma, 2 non-Hodgkin lymphoma, 2 Hodgkin disease, 1 brain stem glioma, 1 endodermal sinus tumor and 1 Ewing sarcoma. Familial cancer was registered in 6 patients. Children were treated with surgery, intensive chemo and radiotherapy. The second malignancy developed after 2 to 13 years: 10 osteosarcoma, 2 Ewing sarcoma, 2 rhabdomyosarcoma, 2 glioblastoma, 1 medulloblastoma, 1 synoviosarcoma, 1 fibrosarcoma, 1 thyroid carcinoma, 1 acute lymphoblastic leukemia and 1 acute myeloblastic leukemia. In 17 patients, the tumor developed in irradiated field. There was no evidence of the first tumor and only 1 patient was still under chemotherapy. Oncologic treatment was frustrating for these second tumors and 18 children died. Three are alive with no evidence of disease at 2 years, 2 years and 4 months and 3 years after diagnosis. One patient was lost to follow-up. It if postulated that second malignant tumors are consecutive to genetic predisposition and/or to the oncogenic effect of chemo and radiotherapy. The intensity of each treatment modality must be reduced as much as possible to obtain survival while limiting the secondary effects.
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PMID:[Second malignant tumor in children. Report of 22 cases]. 210 57

The true survival rates for the various forms of childhood cancer are best determined from a population-based study rather than from the results of clinical trials. Population-based survival rates have been calculated for four periods between 1956 and 1980 in Queensland. There was a significant improvement in survival for children who developed cancer after 1973 compared with those diagnosed before this date. There has however been no significant improvement in the survival rate for childhood cancer overall, or for acute lymphoblastic leukaemia since 1973. Over the 25 year period significant trends in survival rates were seen in acute lymphoblastic leukaemia, non-Hodgkin's lymphoma, Hodgkin's disease, Wilms' tumour, medulloblastoma, and retinoblastoma. No such trend was seen for acute non-lymphoblastic leukaemia, neuroblastoma, rhabdomyosarcoma, juvenile or anaplastic astrocytoma, brain stem glioma, histiocytosis X, or bone tumours. There is a need for continuing research into better methods of treatment of childhood cancer.
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PMID:Childhood cancer survival trends in Queensland 1956-80. 658 17