Weight-loss basics
Learning Center
Dense breast tissue: What it means to have dense breasts
Find out what it means if your mammogram report says you have dense breast tissue. Learn about additional breast cancer screening tests to consider.
Cystoscopy
During cystoscopy, your doctor examines the inside of your bladder using a special instrument that's inserted into the bladder through the urethra.
Croup
This upper airway infection makes it harder to breathe and causes a barking cough. It involves swelling around the voice box, windpipe and bronchial tubes.
Cradle cap
Learn about the symptoms, treatments and home care tips for this short-lived type of seborrheic dermatitis that's common in infants.
Counting calories: Get back to weight-loss basics
Calories count — Try these calorie-cutting basics to get a handle on your weight.
Coronary calcium scan
This heart CT test can show calcium deposits in the blood vessels. Know how the findings relate to your heart disease risk.
Coronary angiogram
Learn more about this heart disease test that uses X-ray imaging to see the heart's blood vessels.
Congenital diaphragmatic hernia (CDH)
In CDH, a baby's diaphragm — the muscle that separates the chest from the abdomen — develops a hole called a hernia. Learn about treatment before birth.
Complete blood count (CBC)
Learn what to expect from having this common blood test, why it's done and how to prepare.
Common cold in babies
This viral infection causes a runny nose and nasal congestion in babies. Find out how to ease symptoms and when to see a doctor.
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