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Atrial Septal Defect
An atrial septal defect is an opening in the atrial septum, or dividing wall between the two upper chambers of the heart, known as the right and left atria.
Common Diagnostic Studies
The CHOC Urology Center uses a number of tests to accurately diagnose patients.
Facts About Cholesterol
Cholesterol is a fat-like, waxy substance that can be found in all parts of the body. It aids in the production of cell membranes, some hormones, and vitamin D.
Heart Failure
Heart failure, also called congestive heart failure, is a condition in which the heart fails to pump enough blood for all of the body’s organs.
Kawasaki Disease
Kawasaki disease, also known as Kawasaki syndrome, is a form of vasculitis, or blood vessel inflammation, that primarily affects children. Read more to learn about the symptoms, treatment and more about it.
Pre-operative Testing
There are many reasons why children need surgery. No matter what type of surgery or procedure a child will be receiving, we are dedicated to ensuring that our surgeons, nurses and other pediatric-trained specialists have all of the information they need to make the surgical experience a success.
Appendicitis in Children and Teens
Appendicitis is a painful swelling and infection of the appendix. It is a medical emergency. CHOC's pediatric surgeons are ready 24 hours a day.
Portal Hypertension
Portal hypertension is high blood pressure of the portal vein in the abdomen. The portal vein collects nutrient-rich blood from the intestines to the liver.
Fetal Echocardiogram
CHOC offers the only comprehensive fetal cardiology services in Orange County, including performing fetal echocardiograms on pregnant women.
Transposition of the Great Arteries
Transposition of the great arteries (TGA) is a congenital (present at birth) heart defect. (It is also often referred to as “transposition of the great vessels.”)
Congenital Heart Defects: Tetralogy of Fallot
Tetralogy of Fallot (TOF or "TET") is a heart condition that occur due to abnormal development of the fetal heart. Learn more about what TOF is, its symptoms, and causes.
Patent Ductus Arteriosus
Patent Ductus Arteriosus (PDA) is a heart problem that is usually noted in the first few weeks or months after birth.
Hypoplastic Left Heart Syndrome
Hypoplastic left heart syndrome (HLHS) is a combination of several abnormalities of the heart and great blood vessels. It is a congenital (present at birth) syndrome.
Lymphatic Malformations
Lymphatic malformations are groups of lymph vessels that form a growing, spongy cluster. Learn everything you need to know at CHOC.org.
Cirrhosis
Cirrhosis is a late stage of progressive liver scarring (fibrosis). The liver of someone who has cirrhosis may become distorted (deformed or misshapen).
Cardiomyopathy
Cardiomyopathy is a disease of the heart muscle that reduces the heart’s ability to pump blood effectively.
Parent Advice Line
To use PAL, simply call (714) 912-8927, enter the four-digit topic numbers listed on this web page, or stay on the line for a complete listing of topics.
Posterior Urethral Valves
Posterior urethral valves (PUV), occur in males and are excess flaps of tissue in the posterior urethra, which is the tube that drains urine from the bladder to the outside of the body for elimination.
Hydronephrosis
Hydronephrosis is a treatable condition in which urine gets trapped in the kidney and drains slower than it should into the bladder.
Tuberous Sclerosis Program
CHOC is designated by the Tuberous Sclerosis Alliance to treat children with tuberous sclerosis, a rare disorder causing epilepsy and growths inside organs.
The Art of Care at CHOC
Learn the inspiring story of a former CHOC patient turned employee who uses art to create a positive experience for patients and families.
Megaureter
Megaureter (dilated ureter) is an abnormality of one or both of the ureters of a child.
DMSA Renal Scan
A DMSA renal scan is a nuclear medicine test used to make images of the kidneys that helps doctors identify areas of damage to the kidney.
The impact of COVID on our children
As we head into the second year of the Covid-19 pandemic, it is important to understand the effects of the virus on children. While the rate of infection in kids is much lower than in adults, children are not immune to COVID-19 and are suffering from both short-and long-term complications.
7 common childhood respiratory diseases
The human respiratory tract is open to the outside world to let air in and carbon dioxide out, making it an easy point of entry for germs that can potentially cause illness.
