Right Upper Quadrant Pain
A. BILE DUCTS
1. Biliary colic/bile duct obstruction
2. Acute cholecystitis/cholangitis
B. LIVER
1. Acute hepatitis: alcoholic, viral, drug-related, toxic
2. Hepatic abscess
3. Hepatic tumor: metastases, hepatocellular carcinoma, hemangioma, focal nodular hyperplasia,
hepatic adenoma
4. Hemorrhagic cyst
5. Hepatic congestion: acute hepatic congestion, Budd-Chiari syndrome
6. Perihepatitis from gonococcal/chlamydial infection (Fitz-Hugh-Curtis syndrome)
C. PANCREAS
1. Acute pancreatitis
D. INTESTINES
1. Acute appendicitis
2. Peripyloric ulcer
3. Small bowel obstruction
4. Irritable bowel
5. Colitis/ileitis
6. Intestinal tumor
E. LUNG
1. Pneumonia
2. Pulmonary infarction
F. KIDNEY
1. Acute pyelonephritis
2. Ureteral calculus
3. Renal/perirenal abscess
4. Renal infarction
5. Renal tumor
G. OTHERS
1. Costochondritis
2. Herpes zoster
