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Appendiceal carcinoids in Crohn's disease
1Department of Medicine, University of British Columbia, Vancouver.
Summary
Crohn's disease patients undergoing intestinal resection show a higher incidence of appendiceal carcinoids than previously reported. These rare tumors may be overlooked, necessitating further investigation into this association.
Area of Science:
- Gastroenterology
- Oncology
- Pathology
Background:
- Crohn's disease is linked to increased colon cancer risk.
- Limited data exists on other intestinal neoplasms, like carcinoids, in Crohn's disease patients.
- Appendiceal neoplasms, including carcinoids, may be detected through surveillance and surgery in Crohn's disease.
Observation:
- A review of 1000 Crohn's disease patients identified three cases of appendiceal carcinoids among 441 who underwent intestinal resection.
- All identified cases occurred in female patients and were not suspected pre-operatively.
- One tumor showed serosal fat invasion, indicating advanced disease at diagnosis.
Findings:
- The detection rate of appendiceal carcinoids in this Crohn's disease cohort (0.3% overall, 0.68% in resections) exceeds rates found in appendicitis cases and autopsy studies.
- The study suggests appendiceal carcinoids might be underdiagnosed in Crohn's disease patients.
- Microcarcinoids and tumors found during retrospective review highlight potential for missed diagnoses.
Implications:
- The findings suggest a potentially elevated risk of appendiceal carcinoids in Crohn's disease patients.
- Further research is required to fully understand and define this risk.
- Increased awareness and diagnostic vigilance may be warranted for appendiceal neoplasms in this population.