Epidemiology and prognostic factors of infantile malignant solid tumor

As an important part of childhood tumors, infantile malignant solid tumor is relatively rare, which has some common characteristics of childhood cancer as well as its own particularity.Most infantile tumors are embryo-derived tumors, whose pathogenesis is related to developmental biology, genetics and environmental factors.The distribution of constituent ratio of infantile malignant tumors is different from that of older children, and the epidemiological data statistics can be influenced by the imperfect children tumor registration system, population migration, birth defects and perinatal factors, environmental exposure, gender, race and other factors.Heterogeneity is one of the prominent features of malignant solid tumor in infants. The experience gained from treatment of older children cannot be directly extrapolated to infants.The principle of treating infantile malignant solid tumors should take into account both the effectiveness and the long-term impact on infant growth.Early diagnosis and appropriate treatment mean that the prognosis of most infants with malignant solid tumor to be better than that of older children.Therefore, it is necessary to manage these tumors as a separate entity.The advance of epidemiology and prognostic factors of infantile malignant solid tumors at home and abroad was reviewed in this paper. Key words: Infant; Malignant; Solid tumor; Incidence rate; Constituent ratio; Prognosis