What does HGD stand for?

Patient and polyp characteristics associated with high-grade dysplasia in colorectal adenomas.

Thus, high-grade dysplasia is defined by the presence of increased crypt complexity, crowding, irregularity, and branching and cytologically by more pronounced nuclear stratification, loss of cell polarity, pleomorphism, and mitotic activity.

Other high-risk findings, according to current post-polypectomy surveillance guidelines, include any adenoma that is 1 cm or larger, or any adenoma with high-grade dysplasia or villous elements.

prevents progression of Barrett's esophagus to low- or high-grade dysplasia in the majority of cases.

By contrast, 21 patients with ITGCs developed dysplasia on follow-up, 18 LGD/IND, and 3 high-grade dysplasia.

Biopsy of the distal esophageal mucosa revealed long-segment Barrett's metaplasia with high-grade dysplasia up to the level of the stricture.

If high-grade dysplasia is confirmed, it is recommended to proceed with esophagectomy.

Moreover, recently published studies utilizing more advanced sDNA technology from Johns Hopkins University (Gastroenterology, August 2008) and Mount Sinai School of Medicine (American Journal of Gastroenterology, October 2008), demonstrated 92% and 83% detection rates for colorectal cancer, respectively, with the Mount Sinai study also demonstrating 86% detection for pre-malignant polyps with high-grade dysplasia, the most clinically important subset of pre-malignant polyps.