Teaching Material Archive

Lung Metastases, “Cannonball Lesions” – CXR

Differentiate malignant metastases to the lung from primary lung malignancy. (5 min)

Identify key characteristics that differentiate a hilar mass due to primary lung cancer from other causes.

Differentiate basilar from apical emphysema to demonstrate the pathophysiologic difference from hematogenous versus inhaled lung toxicity.

Identify reticular opacities on a CXR due to amiodarone-induced interstitial lung disease.

Differentiate between bulky lymphadenopathy and enlarged pulmonary arteries in a CXR with enlarged hila.

Identify mediastinal shift toward a lung opacification to diagnose atelectasis from lobar collapse.

Identify key characteristics suggestive of hyperkalemia and determine the appropriate initial steps in management.

Identify a narrow QRS that is not preceded by a P wave that is characteristic of a junctional rhythm.

Identify the P before every QRS and QRS after every P to confirm sinus rhythm with a bradycardic rate.

Identify the rSR' morphology characteristic of a right bundle branch block (RBBB).