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Understanding Your Child's Lymphatic System What is the lymphatic system? The lymphatic system is a part of the body’s immune system. It works to fight disease and infection. The lymphatic system goes through many changes during a child's growth. Before birth, a baby is protected

Pulmonary Atresia What is pulmonary atresia? Pulmonary atresia (PA) is a heart defect. It happens when the baby's heart doesn’t form as it should in the uterus. This can happen during the first 8 weeks of pregnancy. PA is a problem with the opening of the pulmonary valve. This

Overview of Neck Masses in Children What are neck masses? Neck lumps (masses) are common problems in babies and children. Some neck masses are present at birth (congenital). They result from abnormal formation that occurs in the early stages of an unborn baby's development. Many

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

Pulmonary Stenosis in Children What is pulmonary stenosis in children? Pulmonary stenosis is a birth defect of the heart (congenital). It can happen when the pulmonary valve doesn’t grow as it should in a baby during the first 8 weeks of pregnancy. The pulmonary valve connects

Syncope in Children What is syncope in children? Syncope is a brief loss of consciousness and muscle tone (or posture) that can occur when not enough blood gets to the brain. Syncope is commonly called fainting. In most children, it’s usually harmless. But in a few children

Tricuspid Atresia What is tricuspid atresia? Tricuspid atresia (TA) is a heart defect present at birth (congenital). It occurs when the tricuspid valve doesn’t form, or only partly forms. Normally the tricuspid valve is located between the right upper chamber (atrium) and the

Total Anomalous Pulmonary Venous Return (TAPVR) What is total anomalous pulmonary venous return (TAPVR)? Total anomalous pulmonary venous return (TAPVR) is a congenital heart defect. This means that your child is born with it. It happens as the baby’s heart develops during the

Topic Index - Ear, Nose, and Throat Ear, Nose, & Throat Home Ear Disorders Anatomy and Physiology of the Ear Common Childhood External Ear Problems Otitis Externa (Swimmer's Ear) Foreign Bodies in the Ear, Nose, and Airway Otitis Media (Middle Ear Infection) Mastoiditis Hearing

Tetralogy of Fallot (TOF) What is tetralogy of Fallot? Tetralogy of Fallot (TOF) is a set of 4 congenital heart defects that happen together. Tetralogy refers to the number 4. Congenital means that a baby is born with them. The set of 4 defects are: Narrowing (stenosis) of the