<unk><unk>  may be classified according to involvement of leaflets into unilateral or bilateral. Bilateral<unk><unk>  is a medical emergency. Unilateral<unk><unk>  is often discovered incidentally on chest x-ray for other reasons.
Diaphragmatic paralysis classification
Pneumomediastinum classification
Chest pain classification
Pneumothorax classification
Hemothorax classification
Pulmonary edema classification
Hemoptysis classification
Pulmonary embolism classification