Adenocarcinoma is most common duodenal tumor, occurring in 0.4% of GI tract tumors. Periampullary tumors include adenocarcinomas within 2 cm of ampulla of Vater. GIST is most common benign tumor of small bowel, with 70-80% benign behavior
Colon is the longest part of large intestine, removing water from food. Colon divided into ascending (20cm), transverse (45cm), descending (30cm) and sigmoid (40cm). Rectum is lower part, 15cm long, connecting sigmoid colon to anal canal. Colon has four layers: mucosa, submucosa, muscularis propria and serosa
Normal period lasts 4-5 days, shedding 2-3 tablespoons of blood. Heavy periods can lose twice as much blood monthly. Heavy bleeding requires seeing healthcare provider
Gallbladder polyps are small growths on inner lining. Most are benign but some can lead to cancer. Risk factors include age over 50, female gender, and gallstones
Colon polyps are benign but can develop into cancer. Most polyps are asymptomatic and require routine screening. Symptoms include rectal bleeding, abdominal pain, and changes in bowel habits
Nasal polyps are noncancerous growths in nasal passages and sinuses. Can occur from allergies, immune problems, asthma, or drug sensitivities. Form when nasal mucosa becomes inflamed and drips fluid