A different perspective on macroscopic sampling of cholecystectomy specimens

Area of Science:

• Surgical pathology
• Histopathology
• Gastrointestinal pathology

Background:

• Interdepartmental variations in macroscopic sampling of cholecystectomy specimens may impact diagnostic accuracy.
• Assessing cholecystectomy specimens without obvious malignancy requires standardized sampling methods.

Purpose of the Study:

• To compare the efficacy of longitudinal sampling versus a classical technique for cholecystectomy specimens.
• To determine if longitudinal sampling improves the detection of mucosal lesions.

Main Methods:

• A comparative study of 608 cholecystectomy specimens (2011-2012).
• Classical technique: one sample each from fundus, body, and neck (n=273).
• Longitudinal sampling: neck and lengthwise fundus-to-neck samples in one cassette (n=335). Statistical analysis included Pearson chi-square, Fisher exact, and ANOVA tests (p<.05 significance).

Main Results:

• Longitudinal sampling yielded greater average sample length despite larger gallbladder size in the classical group.
• Increased detection of inflammatory cells, pyloric metaplasia, intestinal metaplasia, low-grade dysplasia, and invasive carcinoma in the longitudinal sampling group.

Conclusions:

• Longitudinal sampling allows examination of longer mucosa compared to the classical technique.
• The longitudinal sampling method enhances the detection of mucosal lesions, including preinvasive ones.
• Longitudinal sampling is a potentially effective technique for identifying preinvasive lesions in cholecystectomy specimens.