Metastatic Gastric Carcinoma Presenting as Acute Appendicitis.

Metastatic disease is one of the few rare causes which can present with clinical and radiological features of acute appendicitis. In this article, we present a case of a 33-years-old man with known primary gastric malignancy undergoing adjuvant treatment, who presented with clinical peritonitis. Imaging findings revealed acute appendicitis and a sealed-off appendiceal perforation. Diagnosis of metastatic adenocarcinoma to the appendix was confirmed on histopathology. Sound knowledge among clinicians and radiologists regarding clinical presentation and radiological findings of acute abdomen in patients with known primary malignancy can aid in rapid diagnosis and management.