Where can bleeding occur if not from ulcers or colon?

Bleeding can occur from various sources outside of ulcers or the colon, such as the gastrointestinal tract (e.g., esophageal varices, gastritis), the urinary system (e.g., kidney stones, urinary tract infections), or from external injuries. Additionally, bleeding can result from conditions affecting the blood vessels, such as aneurysms or vascular malformations. Other sources include the respiratory system (e.g., pulmonary hemorrhage) and reproductive system (e.g., menstrual bleeding, ectopic pregnancy).