Sickle cell patient with chest pain, dyspnea, cough, and fever. Most likely diagnosis?

Sickle cell patient with chest pain, dyspnea, cough, and fever. Most likely diagnosis?

• A. Pneumonia
• B. Acute chest syndrome
• C. Pulmonary embolism
• D. Acute myocarditis

Answer: (B)

In sickle cell disease, an acute chest syndrome shows up when chest pain, dyspnea, fever, and a new pulmonary infiltrate appear together. It happens from sickled cells causing vaso-occlusion in the lung vessels, often triggered by infection or dehydration, leading to inflammation, small areas of infarction, and alveolar collapse. This combination—respiratory symptoms with fever plus a new infiltrate on chest imaging—is the hallmark of ACS and it is a leading cause of hospitalization and mortality in these patients. The fever and cough with chest pain fit the infectious/inflammatory aspect, while the new infiltrate ties the syndrome to acute lung involvement rather than a pure cardiac or vascular process. Pneumonia can cause similar symptoms, but ACS is distinguished by its context in sickle cell disease and the defining finding of a new lung infiltrate during a crisis, sometimes with hypoxemia. Pulmonary embolism can present with chest pain and dyspnea but fever and a new infiltrate are less typical, and myocarditis would more classically center on cardiac signs with less emphasis on a new lung infiltrate. In short, this presentation—sickle cell patient, chest pain, dyspnea, fever, and a new chest infiltrate—best fits acute chest syndrome.

In sickle cell disease, an acute chest syndrome shows up when chest pain, dyspnea, fever, and a new pulmonary infiltrate appear together. It happens from sickled cells causing vaso-occlusion in the lung vessels, often triggered by infection or dehydration, leading to inflammation, small areas of infarction, and alveolar collapse. This combination—respiratory symptoms with fever plus a new infiltrate on chest imaging—is the hallmark of ACS and it is a leading cause of hospitalization and mortality in these patients.

The fever and cough with chest pain fit the infectious/inflammatory aspect, while the new infiltrate ties the syndrome to acute lung involvement rather than a pure cardiac or vascular process. Pneumonia can cause similar symptoms, but ACS is distinguished by its context in sickle cell disease and the defining finding of a new lung infiltrate during a crisis, sometimes with hypoxemia. Pulmonary embolism can present with chest pain and dyspnea but fever and a new infiltrate are less typical, and myocarditis would more classically center on cardiac signs with less emphasis on a new lung infiltrate.

In short, this presentation—sickle cell patient, chest pain, dyspnea, fever, and a new chest infiltrate—best fits acute chest syndrome.