Search Results

Prematurity What is prematurity? A baby born before 37 weeks of pregnancy is considered premature or born too early. Other terms used for prematurity are preterm and the nicknames "preemie" or "premie". About 1 in every 10 infants are born prematurely. Twins and other multiples

Allergy Overview What are allergies? Allergies are due to a problem with the body's immune system. Most allergic reactions happen when the immune system reacts to a false alarm. Normally the immune system attacks harmful things, such as viruses or bacteria. But sometimes it

Osteosarcoma (Osteogenic Sarcoma) in Children What is osteosarcoma in children? Osteosarcoma is very rare, but it's the most common kind of bone cancer in children and teens. It's most common in teens and young adults. Osteosarcoma is cancer that starts in the bone. The cancer

Exercise for Cancer Prevention People who are overweight or obese have a higher risk of getting certain cancers. This includes cancers of the: Breast (for people past menopause). Endometrium. Ovary. Kidney. Liver. Rectum. Esophagus. Colon. Pancreas. Stomach. Thyroid. Gallbladder

Non-Hodgkin Lymphoma (NHL) in Children What is non-Hodgkin lymphoma (NHL) in children? NHL is cancer that starts in the lymphatic system. The lymphatic system is part of the immune system. It helps to fight diseases and infections. NHL results when the cells in the lymphatic

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 Breast Conditions Click on the links below to learn about common breast conditions. Mastalgia (Breast Pain) Common Benign Lumps Fibrocystic Breast Changes Nipple Problems and Discharge Breast Infections and Inflammations Diagnosing Benign Breast Conditions© 2000-2025 The

What Are Red Blood Cells? Red blood cells carry fresh oxygen all over the body. This is important to your health. Red blood cells are round with a flattish, indented center, like doughnuts without a hole. Your healthcare provider can check on the size, shape, and health of your

Crohn's Disease in Children What is Crohn's disease in children? Crohn's disease is when there is redness, swelling (inflammation), and sores along the digestive tract. It is part of a group of diseases known as inflammatory bowel disease. Crohn's disease is a long-term (chronic)

GERD (Gastroesophageal Reflux Disease) in Children What is GERD in children? GERD (gastroesophageal reflux disease) is a long-term (chronic) digestive disorder. It happens when stomach contents flow back up (reflux) into the food pipe (esophagus) and cause symptoms or problems