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Leukemia in Children What is leukemia in children? Leukemia is cancer that starts in young (immature) blood cells. It’s the most common kind of cancer in children. The leukemia cells grow in bone marrow and then go out into the blood. The bone marrow is the soft, spongy center of

Germ Cell Tumors (GCTs) in Children What are germ cell tumors in children? A type of cell that forms as a fetus (also called unborn baby or embryo) develops is called a germ cell. Germ cells are the cells that make the eggs (ova) in females and the sperm in males. Germ cell

Common Tests During Pregnancy These are some of the more common tests done during pregnancy. First trimester prenatal screening tests First trimester screening is a combination of fetal ultrasound and maternal blood testing. It can help find out the risk that the fetus has

Brain Tumors in Children What are brain tumors in children? A brain tumor is an abnormal growth of tissue in the brain. The brain is part of the central nervous system (CNS). The CNS also includes the spinal cord. The main parts of the brain are: Cerebrum. This is the front of

Down Syndrome (Trisomy 21) in Children What is Down syndrome in children? Down syndrome is a genetic disorder. It is also called trisomy 21. It includes certain birth defects, learning problems, and facial features. A child with Down syndrome also may have heart defects and

22q11.2 Deletion Syndrome in Children What is 22q11.2 deletion syndrome in children? The 22q11.2 deletion syndrome (22q11.2DS) is a genetic disorder. In children with this syndrome, a tiny piece of chromosome 22 is missing. This can cause many health problems. These problems may

Rett Syndrome in Children What is Rett syndrome in children? Rett syndrome is a rare genetic developmental and neurological disorder. It almost exclusively affects girls. Children with this disorder often develop normally for their first 6 to 18 months. After that, they start to

Endometriosis What is endometriosis? The tissue that lines the uterus is called the endometrium. Normally, if a woman doesn’t get pregnant, this tissue is shed each month during her period. In endometriosis, tissue that looks and acts like endometrial tissue implants outside the

Lyme Disease in Children What is Lyme disease in children? Lyme disease is an infection caused by bacteria called Borrelia burgdorferi. The bacteria are spread by tick bites. Lyme disease is a year-round problem, but it peaks during the spring and summer months. It can cause

Perimenopause What is perimenopause? Perimenopause is the transitional time around menopause. Menopause is when a woman’s periods stop. It’s marked by changes in the menstrual cycle, along with other physical and emotional symptoms. This time can last 2 to 8 years. During this