Unilateral pleuritic chest pain causes
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Common and Serious Causes of Unilateral Pleuritic Chest Pain
Unilateral pleuritic chest pain—sharp, stabbing pain on one side of the chest that worsens with breathing—can be caused by a range of conditions, from benign to life-threatening. Pulmonary embolism is the most common serious cause, found in 5% to 21% of emergency department cases, and should be ruled out first using clinical decision rules and appropriate imaging or laboratory tests Reamy2017Kass2011. Other critical causes include myocardial infarction, pericarditis, aortic dissection, pneumonia, and pneumothorax, all of which require prompt evaluation with history, physical examination, electrocardiography, and chest radiography Reamy2017Kass2011.
Infectious and Inflammatory Causes
Viral infections are frequent causes of pleuritic chest pain, with pathogens such as coxsackievirus, respiratory syncytial virus, influenza, parainfluenza, mumps, adenovirus, cytomegalovirus, and Epstein-Barr virus commonly implicated Reamy2017Kass2011. Bacterial infections, including pneumonia and tuberculosis, are also significant contributors, especially when associated with pleural effusion . In some cases, cryptogenic organizing pneumonia, a rare inflammatory lung condition, can present with pleuritic chest pain and may require biopsy for diagnosis .
Musculoskeletal and Structural Causes
Musculoskeletal issues, such as costosternal or costovertebral joint problems, can cause unilateral pleuritic chest pain. Notably, previously undiagnosed scoliosis has been identified as a significant risk factor, as the abnormal curvature of the spine can lead to rib subluxation and direct pressure on intercostal nerves, resulting in pleuritic pain . Careful physical examination for chest wall tenderness and spinal abnormalities is important in these cases.
Rare and Unusual Etiologies
Several rare conditions can also cause unilateral pleuritic chest pain. Unilateral pulmonary artery agenesis, a congenital absence of one pulmonary artery, can present with pleuritic pain and hemoptysis and may be mistaken for pulmonary embolism . Torsion of extralobar pulmonary sequestration, a rare congenital lung anomaly, can also cause sudden-onset pleuritic pain and may require advanced imaging and surgical intervention .
Pleural Effusion and Malignancy
Pleural effusion, the accumulation of fluid in the pleural space, is a common cause of pleuritic chest pain. In a clinical audit, the most frequent causes of pleural effusion were malignancy, tuberculosis, and empyema (a collection of pus in the pleural cavity) . These conditions often require thoracoscopy and pleural biopsy for definitive diagnosis.
Diagnostic Approach and Management
A thorough diagnostic approach is essential, starting with ruling out life-threatening causes. History, physical examination, and basic imaging are recommended for all patients. When initial tests are inconclusive, further investigations such as CT scans, MRI, or biopsy may be necessary, especially for rare or complex cases Reamy2017Kass2011Bonello2021+1 MORE. Treatment is directed at the underlying cause, with nonsteroidal anti-inflammatory drugs often used for pain management in benign or viral cases Reamy2017Kass2011.
Conclusion
Unilateral pleuritic chest pain has a broad differential diagnosis, ranging from common infections and musculoskeletal issues to rare congenital anomalies and malignancies. Prompt identification of serious causes is critical, followed by targeted evaluation for less common etiologies. A systematic approach ensures accurate diagnosis and appropriate management, improving patient outcomes Reamy2017Kass2011Lip1993+4 MORE.
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