A Case of Cameron Lesions: An Overlooked Cause of Anemia in Patients With Gastrointestinal Bleeding and Hiatal Hernia

Cameron lesions are rare causes of upper gastrointestinal bleeding (UGIB). The lesions are linear erosions or ulcers that develop in the sac of a hiatal hernia, which often go unnoticed in the upper gastrointestinal system, and are a prevalent cause of anemia resulting from iron deficiency. Postponed treatment can result in severe consequences such as potentially fatal hemorrhaging. Here, we present a case of a young woman who presented to the emergency room with recurrent gastrointestinal bleeding and severe microcytic anemia. The chest X-ray revealed a partial intrathoracic stomach, and a large hiatal hernia was subsequently confirmed in the CT scan of the abdomen and pelvis. The esophagogastroduodenal endoscopy indicated Los Angeles Classification System grade A reflux esophagitis and an 8 cm hiatal hernia with multiple Cameron ulcers with pigmented material and chronic non-erosive gastritis. Biopsies of the gastric body and antrum showed