?Carina? ultimately derives from Latin, meaning ?keel of a boat
- In a Nutshell
- Carinal Angle
- The normal carinal angle is between 40-80 degrees.
- Carinal Angle


Ashley Davidoff thecommonvein.net

A dancer demonstrates a normal carinal angle (upper image) and as she continues to extend her left leg, (lower images) the angle becomes greater than 80 degrees and in terms of the carinal angle becomes abnormal.
Ashley Davidoff MD
NORMAL FRONTAL CXR NORMAL ASYMMETRIC BRANCHING OF MAINSTEM BRONCHI
The normal CXR shows the characteristic asymmetric branching of the main stem bronchi. The right is short and stout and slightly more vertical while the left is long and thin and slightly more obtuse.
The normal carinal angle is between 40-80 degrees.
Ashley Davidoff MD
The Carinal Angle
Elevated Left Main Stem Bronchus
Elevated Right Main Stem Bronchus