Appendicitis causes right lower abdominal pain, nausea, vomiting and decreased appetite. Approximately 40% of people don't have typical symptoms. Diagnosis relies on physical exam, blood tests and imaging. Ultrasound is preferred in children and pregnant women. CT scan is more accurate than ultrasound for diagnosis
Axillary lymph nodes are located in the armpit, containing 20-49 nodes. They drain lymph from breast, chest, abdomen, and upper limb. About 75% of breast lymph drains into these nodes
GA is a benign gallbladder wall alteration found in 1-9% of patients. Characterized by wall thickening containing Rokitansky-Aschoff sinuses. Four main patterns: localized, segmental, annular, and diffuse. Usually asymptomatic, may cause right upper quadrant pain
IPMN is a benign pancreatic cyst that can develop into cancer. About 8% of pancreatic cancer cases originate from IPMN cysts. IPMN is the most common pancreatic cystic lesion, affecting 10.9% of people over 50
Sigmoid colon is 35-40 cm long, located near rectum and anus. Primary function is transporting fecal matter to rectum. Also absorbs water, vitamins, and nutrients from feces
Omentum is a two-layered fatty tissue surrounding abdominal organs. Greater omentum hangs from stomach, lesser omentum from liver. Omentum contains many tiny blood vessels for cancer cell transport