Accord 2024 Costochondritis. In contrast to myocardial ischemia or infarction, costochondritis is a benign cause of chest pain and is an important consideration in the differential diagnosis. Costochondritis is a condition where the cartilage that connects a rib to the breastbone becomes inflamed.

This costochondral junction, as it is also known, is. Costochondritis presents with insidious onset of anterior chest wall pain exacerbated by certain movements of the chest and deep inspiration.