Peritoneal Tuberculosis Mimicking Peritoneal Carcinomatosis from Gastric Adenocarcinoma: A Case Report

Peritoneal carcinomatosis is a common and severe complication of advanced gastric cancer, associated with poor prognosis and limited therapeutic options. However, peritoneal tuberculosis can clinically and radiologically mimic carcinomatosis, making diagnosis particularly challenging in endemic regions. We report the case of a 69-year-old female patient with gastric adenocarcinoma and peritoneal lesions highly suggestive of carcinomatosis, which were subsequently confirmed to be peritoneal tuberculosis. This case highlights the importance of considering tuberculosis in the differential diagnosis of peritoneal lesions to avoid misdiagnosis and to ensure appropriate management.