Lethal neuroendocrine carcinoma in ulcerative colitis

Area of Science:

• Gastroenterology
• Oncology
• Pathology

Background:

• Longstanding and extensive pancolitis presents a complex clinical scenario.
• Neuroendocrine carcinomas are rare but aggressive malignancies.
• Endoscopic surveillance is crucial for managing chronic inflammatory bowel diseases.

Observation:

• A 48-year-old male with pancolitis developed a high-grade malignant lesion in the ascending colon.
• Previous biopsies from multiple colonic sites showed only inflammatory changes, without dysplasia.
• The lesion was identified as a neuroendocrine carcinoma with a rapid and lethal course.

Findings:

• Neuroendocrine carcinoma can arise in the colon, even after negative surveillance biopsies.
• Aggressive neoplastic lesions may evade detection during standard endoscopic surveillance.
• The biological behavior of some colonic tumors is characterized by rapid progression.

Implications:

• Endoscopic surveillance programs may have limitations in detecting rapidly progressing colonic neoplasms.
• Increased vigilance and potentially advanced diagnostic techniques may be needed for high-risk patients.
• This case underscores the importance of considering rare and aggressive malignancies in patients with chronic colitis.