Colorectal cytology in chronic ulcerative colitis

Area of Science:

• Gastroenterology
• Oncology
• Cytopathology

Background:

• Chronic ulcerative colitis (CUC) patients have an increased risk of colorectal cancer.
• Regular monitoring is crucial for early detection of dysplasia and malignancy in CUC.

Purpose of the Study:

• To evaluate the role of colorectal cytology in detecting malignant transformation in patients with CUC.
• To assess the diagnostic accuracy of cytology in identifying cancerous and precancerous lesions.

Main Methods:

• Retrospective analysis of 109 colorectal cytology specimens from 41 symptomatic CUC patients over ten years.
• Correlation of cytologic findings with subsequent colectomy and biopsy results.

Main Results:

• Eight specimens (7.3%) showed malignant cells, with subsequent colectomy confirming invasive carcinoma in five and carcinoma in situ in two.
• 35 specimens (32.1%) exhibited atypia, and 58 (53.2%) were negative.
• Atypical and negative smears revealed inflammatory changes, polyps, or mucosal atypia upon biopsy.

Conclusions:

• Colorectal cytology is a valuable tool for screening CUC patients for colorectal cancer.
• Cytology can detect malignant transformation and precancerous changes, facilitating timely intervention.