entrench (entrenches 3rd person present) (entrenching present participle) (entrenched past tense & past participle) If something such as power, a custom, or an idea is entrenched, it is firmly established, so that it would be difficult to change it. verb.
Leukemia. Leukemias, which are cancers of the bone marrow and blood, are the most common childhood cancers. They account for about 30% of all cancers in children. The most common types in children are acute lymphocytic leukemia (ALL) and acute myelogenous leukemia (AML).rain and central nervous system tumors. Brain and central nervous system tumors are the second most common cancers in children, making up about 26% of childhood cancers. There are many types of brain tumors, and the treatment and outlook for each is different.
Leukemia is the most common form of childhood cancer. In the United States, leukemia affects around 3,500 children aged 0-14 each year which represents around 40% of all childhood cancers. In young adults, leukemia rates are somewhat lower but the disease is still one of the 5 most common forms of cancer in the 15-39 age group. Childhood leukemia rates in the USA have been increasing steadily by around 1% a year for the past half century.