What is H. pylori? Helicobacter pylori (H. pylori) is a spiral-shaped bacterium that is found in the gastric mucous layer or adherent to the epithelial lining of the stomach. H. pylori causes more than 90% of duodenal ulcers and up to 80% of gastric ulcers. Before...

Esophageal Cancer Pathophysiology and Symptoms The two most common forms of esophageal carcinoma are squamous cell carcinoma (SCC) and adenocarcinoma (AC).  Less than 1% to 2% of all esophageal cancers are sarcomas or small cell carcinomas. Regardless of the specific...

What are some possible causes of female infertility? Getting pregnant and carrying a pregnancy to term are actually very complicated processes. Many things can go wrong during these processes to lead to infertility. For this reason, the following list includes only...

What is endometriosis? Endometriosis, sometimes called "endo," is a common health problem in women. It gets its name from the word endometrium, the tissue that normally lines the uterus or womb. Endometriosis happens when this tissue grows outside of your uterus and...

What is prevention? Cancer prevention is action taken to lower the chance of getting cancer. By preventing cancer, the number of new cases of cancer in a group or population is lowered. Hopefully, this will lower the number of deaths caused by cancer. To prevent new...