Pulmonary Crohn's Disease Masquerading as Lymphoma

Area of Science:

• Gastroenterology and Pulmonology
• Rare Diseases
• Diagnostic Challenges

Background:

• Extraintestinal manifestations of inflammatory bowel disease (IBD) are frequent, but pulmonary involvement is exceptionally uncommon.
• Pulmonary IBD presents with nonspecific clinical, radiologic, and pathologic features, complicating diagnosis.
• The diagnostic difficulty can lead to misidentification as other serious conditions.

Observation:

• A patient with a known diagnosis of Crohn's disease presented with symptoms initially highly suggestive of lung malignancy.
• The patient's presentation included nonspecific respiratory symptoms and imaging findings.
• Further investigations were required to differentiate the condition from other lung pathologies.

Findings:

• The patient was ultimately diagnosed with pulmonary IBD, a rare manifestation of Crohn's disease.
• The diagnosis was confirmed after excluding other potential causes and through specific diagnostic workup.
• This case underscores the importance of considering pulmonary IBD in the differential diagnosis.

Implications:

• This case highlights the critical need for a high index of suspicion for pulmonary IBD in patients with known Crohn's disease presenting with respiratory symptoms.
• Accurate and timely diagnosis of pulmonary IBD is crucial to avoid misdiagnosis and ensure appropriate management.
• Further research into the pathogenesis and diagnostic criteria for pulmonary IBD is warranted.