American Board of Surgery Qualifying Exam (ABS QE) Practice Test

The Haggitt classification is used to describe what aspect of polyps?

1. Size of polyps

2. Degree of dysplasia

3. Invasion depth through mucosa

4. Histological type of polyps

The correct answer is: Invasion depth through mucosa

The Haggitt classification is specifically designed to assess the invasion depth of colorectal polyps through the mucosal layers. It provides a systematic approach to categorizing polyps based on how deep the neoplastic tissue penetrates into the submucosa. This classification is particularly significant in determining the malignancy potential of polyps, especially when discussing polyp resection and the associated risks of residual disease. The classification categorizes polyps into different levels based on their depth of invasion. For example, it helps to distinguish whether a polyp is a non-invasive lesion or if it has begun to invade deeper layers, which can influence treatment decisions and follow-up strategies. Understanding the depth of invasion is crucial because it can significantly affect a patient's prognosis and therapeutic approach. Size, degree of dysplasia, and histological type are aspects related to polyps, but the Haggitt classification does not specifically address these factors. Instead, it focuses solely on the invasion and depth, highlighting its relevance in clinical practice regarding management and surveillance of colorectal cancer risk.