Prevalence of Helicobacter pylori among Sudanese patients diagnosed with colon polyps and colon cancer using immunohistochemistry technique.

Objectives: Infection with the bacteria Helicobacter pylori has been classified as class one carcinogen associated with increasing susceptibility of gastritis and gastric carcinoma. This study is aiming at investigating the prevalence of H. pylori among colon polyps and colon cancer patients.

A cadaveric study quantifying the anatomical landmarks of the facial artery and its parapharyngeal branches for safe transoral surgery.

Background: Hemorrhage remains a major potential risk when performing any form of transoral surgery. This is the first study to focus on the location of the facial artery "bulb" (FaB) and its tonsillar branches within the parapharyngeal space (PPS) from the perspective of the transoral surgeon.

Method: A total of 44 hemi-sections were dissected via the transoral approach with endoscopic assistance: 26 from fresh-frozen specimens and 18 formalin-fixed hemi-sections.