The patient was diagnosed with bronchial casts made from particulate matter from forest fire smoke. When the lungs get ...

A fiberoptic bronchoscopy is a medical procedure that allows a doctor to examine the airways, take samples for biopsy, remove objects from the airways, and perform minor treatments. A fiberoptic ...

A flexible bronchoscopy is a medical procedure that allows a doctor to examine the inside of the airways. Doctors pass a tube-like device into the airways to diagnose medical conditions, take biopsies ...

When you're sick you'll often produce more phlegm, and might notice it's thicker or a different color: white, green, yellow or maybe even brown. We all produce mucus, even when healthy. Mucus is a ...

Bloody, brown, white, yellow, or green phlegm may be a sign of an underlying condition or infection. Viral and bacterial infections, allergies, and respiratory illnesses can cause phlegm as a symptom.