In a 23-year-old male with two days of right-sided chest wall pain that worsens with coughing and deep breathing and normal vital signs, how should I evaluate and manage him?

Approach to a 23-Year-Old Male with Pleuritic Right-Sided Chest Pain

In this young, hemodynamically stable patient with pleuritic chest pain, begin with a focused physical examination looking for chest wall tenderness and obtain a chest X-ray to exclude pneumothorax and pneumonia; most cases will be musculoskeletal (costochondritis) requiring only symptomatic management, but you must first rule out life-threatening causes.

Initial Clinical Assessment

Key Physical Examination Findings to Elicit

A focused cardiovascular and respiratory examination should specifically assess for 1:

• Chest wall tenderness: Palpate the costochondral joints and intercostal spaces at the site of pain. Reproducible pain with palpation strongly suggests musculoskeletal etiology and markedly reduces the probability of acute coronary syndrome (ACS) 1
• Breath sounds: Unilateral absence suggests pneumothorax 1
• Vital signs: Tachycardia and dyspnea occur in >90% of pulmonary embolism (PE) cases 1
• Fever and localized findings: Suggests pneumonia (look for dullness to percussion, egophony) 1

Critical Red Flags to Exclude

While this presentation is most consistent with benign musculoskeletal pain, you must systematically exclude:

• Pneumothorax: Sudden onset, unilateral absent breath sounds, pleuritic pain 1
• Pulmonary embolism: Though less likely given age and normal vitals, consider if risk factors present 2
• Pneumonia: Fever, productive cough, focal findings 1
• Pericarditis: Pain worse when supine, may have friction rub 1

Diagnostic Approach

Initial Imaging

Chest radiography is the appropriate initial imaging test 3:

• Evaluates for pneumothorax, pneumonia, and rib fractures 3
• In stable outpatients with nontraumatic chest pain, only 4.9% of rib series show fractures 3
• Chest X-ray helps exclude conditions that simulate chest wall pain, particularly spontaneous pneumothorax 3

Important caveat: Chest radiographs are insensitive for costochondral junction abnormalities and chest wall soft tissue pathology 3. However, given normal vitals and the clinical presentation, advanced imaging (CT) is not indicated unless specific risk factors for trauma, infection, or malignancy are present 3.

When Advanced Imaging Is NOT Needed

CT chest should be reserved for 3:

• Patients requiring evaluation of other pulmonary diseases
• Presence of clinical risk factors like trauma, infection, or malignancy
• CT is not useful as first-line for isolated chest wall pain in low-risk patients 3

Most Likely Diagnosis

Costochondritis or chest wall syndrome is the most probable diagnosis 3:

• Accounts for 42-51% of nontraumatic chest pain in primary care and ambulatory settings 3
• Typically presents with localized pain worsened by movement, coughing, and deep breathing 4
• In 55.4% of cases, symptoms persist beyond 6 months, so counsel the patient accordingly 4
• Most cases are readily diagnosed by physical examination without imaging 3

Alternative Consideration: Cough-Induced Rib Fracture

If the patient has had severe or prolonged coughing:

• Post-tussive rib fractures occur in 82.4% of patients presenting with post-tussive chest pain 3
• Most commonly affects mid-to-lower ribs, especially the 10th rib 3
• Chest X-ray may show rib space widening 3

Management Algorithm

1. Perform focused physical examination with specific attention to chest wall tenderness reproducibility 1

2. Obtain chest X-ray to exclude pneumothorax, pneumonia, and assess for rib fractures 3

3. If chest X-ray is normal and examination shows reproducible chest wall tenderness:

   • Diagnose musculoskeletal chest pain/costochondritis
   • Treat with NSAIDs for pain management 2
   • Reassure patient about benign nature
   • Warn about potential chronicity (symptoms may persist >6 months in over half of cases) 4

4. If chest X-ray shows abnormality: Treat accordingly (pneumothorax, pneumonia, fracture)

5. Return precautions: Instruct patient to return if develops fever, worsening dyspnea, hemoptysis, or syncope

Common Pitfall

Do not order extensive cardiac workup in this low-risk patient. At age 23 with normal vitals, pleuritic pain (worse with breathing/coughing), and reproducible chest wall tenderness, the pretest probability of ACS is extremely low 1. Chest pain that is pleuritic and reproducible on palpation markedly reduces the probability of ACS 1.