نتایج جستجو برای: childhood tumor.
تعداد نتایج: 574765 فیلتر نتایج به سال:
background: neuroblastoma is the most common tumor in infancy and wilms’ tumor is the most common malignant tumor of kidney in childhood. both the tumors are usually within the differential diagnosis of each other. this study compares the clinical manifestations, sex and age distribution of childhood wilms’ tumor and neuroblastoma at one of tehran children hospitals. materials and methods: the ...
osteosarcoma (os) is the eighth common cancer of childhood and its incidence is 4 cases in one million in children younger than 14. facial os incidence is estimated between 8 and 10% of os cases. the main etiology of os is unknown, but various predisposing factors are proposed such as radiation, radiotherapy, some benign bone diseases like paget’s disease or fibrous dysplasia. there is a 5-year...
background: in this study, we examined the epidemiologic characteristics of childhood brain tumors in patients referred to mahak pediatric cancer treatment and research center (one of the main national referral centers for childhood malignancies in iran) for treatment. materials and methods: this cohort (simple sampling) study consisted of 198 children less than 15 year old with cns tumor refer...
background: neuroblastoma is the most common extra cranial malignant solid tumor of childhood. various molecular and cytogenetic factors have been implicated in the pathogenesis of neuroblastoma, some of which have proven useful in predicting clinical behavior. over expression of the oncogen n-myc, is an important indicator of prognosis. materials and methods: our study was performed from 2004 ...
background: tumor lysis syndrome caused by widespread tumor cell damage may lead to electrolyte imbalances and express as metabolic disturbance causing clinical abnormalities. patients and methods: all patients younger than 16 years with documented malignancy candidate for chemotherapy, in hamedan province of iran were enrolled. results: out of 69 cancer patients the laboratory form of tumor ly...
Wilm's tumor is the 4th common malignant tumor of childhood (after CNS tumors, Non Hodgkin's lymphoma and neuroblastoma), and indeed comprises about 5% of childhood malignancies. This is a retrospective study of histologic findings of 23 cases of wilm ' s tumor referred to Mofid Children's Hospital from 1991-1995. 20 Cases were classified as favorable and 3 cases as unfavorable histology . Corr...
wilms’ tumor is the most common abdominal tumor of childhood, and its cerebral metastasis is apparently very rare. the authors report an 18-month-old girl with wilms’ tumor and brain metastasis.
Background: Malignant neoplasms remain the second leading cause of death in children after accidents. The aim of this study was to assess the epidemiology of childhood cancer in children admitted to Dr sheikh hospital, Iran. Materials and Methods: This descriptive cross- sectional study had been done in Dr Sheikh Hospital in Mashhad University of medical science on 1764 children younger than 1...
Secondary Malignant Neoplasm(SMN) is one of the late effects of childhood cancer. Among secondary malignancies, acute myeloid leukemia(AML) is the most common and life-threatening neoplasm. Secondary acute lymphoblastic leukemia(ALL) is rare and only 10% of SMN is ALL. Patients with Wilm’s tumor are not protected from the secondary cancers after the primary diagnosis. Among patients...
background: malignant neoplasms remain the second leading cause of death in children after accidents. the aim of this study was to assess the epidemiology of childhood cancer in children admitted to dr sheikh hospital, iran. materials and methods: this descriptive cross- sectional study had been done in dr sheikh hospital in mashhad university of medical science on 1764 children younger than 14...
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