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儿童也可患恶性肿瘤,而且有的恶性肿瘤还最爱青睐儿童。据国内外资料报道,近年来,儿童恶性肿瘤的发病率有上升趋势,应引起人们的注意。 白血病 俗称“血癌”,是儿童恶性肿瘤病中最多见的一种,约占儿童所有恶性肿瘤的三分之一。据统计我国每10万人中有2—4人患白血病,每年有三万余人死于此病。白血病的病因十分复杂,先天性染色体异常的儿童,白血病患病率比正常儿童高3—15倍;孕妇早期接触X射线及吸烟,可使出生后儿童患白血病的危险性增加;病毒感染,电离辐射、较长时间接触某些致癌物质以及药物如氯霉素等均可导致白血病的发生。白血病根据病势急缓和细胞分化程度,分为急性白血病和慢性白血病;急性白血
Children can also suffer from malignant tumors, and some malignant tumors also love children. According to domestic and foreign information reports, in recent years, the incidence of malignant tumors in children is on the rise, should arouse people’s attention. Leukemia, commonly known as “blood cancer”, is the most common form of childhood cancer and accounts for about one third of all childhood malignancies. According to statistics, 2-4 people out of every 100,000 people in China suffer from leukemia and more than 30,000 people die of this disease each year. The etiology of leukemia is very complicated. Children with congenital chromosomal abnormalities, the prevalence of leukemia 3-15 times higher than normal children; early exposure to X-rays and smoking in pregnant women, postnatal children can increase the risk of leukemia; viral infection, ionization Radiation, prolonged exposure to certain carcinogens and drugs such as chloramphenicol can lead to the occurrence of leukemia. According to the severity of acute leukemia and cell differentiation, divided into acute leukemia and chronic leukemia; acute leukemia