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Beyond the Bowel: Lung Cancer Presenting as Complicated Diverticulitis
Ramya Vasireddy1, Mariah M Bilalaga1, Greeshma Gaddipati1
1Department of Internal Medicine, MedStar Union Memorial Hospital, Baltimore, MD, USA.
Journal of Community Hospital Internal Medicine Perspectives
|August 4, 2025
Summary
Lung cancer rarely spreads to the small intestine. This case highlights a perforated small bowel caused by advanced lung cancer, emphasizing atypical presentations.
Area of Science:
- Oncology
- Gastroenterology
- Surgical Pathology
Background:
- Lung cancer commonly metastasizes to distant organs such as the liver, brain, and bones.
- Gastrointestinal metastasis from lung cancer is infrequent, with small intestinal involvement being particularly rare.
Observation:
- A patient presented with a perforated small bowel requiring emergency surgery.
- Initial imaging suggested an infectious etiology for the bowel perforation.
- Further investigation revealed the perforation was due to poorly differentiated lung cancer.
Findings:
- The patient's jejunal perforation was confirmed to be a manifestation of metastatic lung cancer.
- Despite eligibility for immunotherapy, the patient chose palliative hospice care.
Implications:
- This case underscores the importance of considering metastatic malignancy in the differential diagnosis of spontaneous small bowel perforation.
- It highlights the atypical gastrointestinal presentation of advanced lung cancer.
- Recognizing rare metastatic patterns is crucial for timely diagnosis and management.
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