Related Experiment Videos
In vitro biopsy of colorectal carcinomas
M A Lavelle1, N C H Keong, P A Berresford
1Department of Surgery, Princess Royal Hospital, Haywards Heath, UK. malawbrook@aol.com
Summary
For ulcerated colorectal neoplasms, biopsies from the center of the lesion are most effective for proving invasive carcinoma. Biopsies from the edge are less likely to yield positive results for invasive cancer.
Area of Science:
- Gastroenterology
- Surgical Pathology
- Oncology
Background:
- Colorectal neoplasms require accurate pathological assessment for staging.
- Determining invasiveness is crucial for treatment planning in colorectal cancer.
Purpose of the Study:
- To identify the optimal biopsy site within ulcerated colorectal neoplasms for diagnosing invasive carcinoma.
- To improve the diagnostic yield of biopsies from colorectal lesions.
Main Methods:
- Experimental study involving 50 ulcerated colorectal tumors.
- Biopsies were taken from four distinct sites: lesion edge junction, rolled edge top, rolled edge-ulcer base junction, and ulcer center.
- Blind sampling to prevent pathologist bias.
Main Results:
- Biopsy sensitivity for invasive carcinoma: 16% (edge), 64% (rolled edge top), 88% (rolled edge inner aspect), 90% (ulcer center).
- The center of the ulcer yielded the highest detection rate for invasive carcinoma.
Conclusions:
- Biopsies from the central ulcer area of colorectal carcinomas are superior for detecting invasive disease.
- Targeting the center of ulcerated lesions increases the likelihood of a positive diagnosis for invasive colorectal cancer.