The Appendix: A Rare Case of an Appendiceal Collision Tumor

Abstract

Appendicitis is a common cause of right lower quadrant pain. However, appropriate diagnostic evaluation and a high clinical suspicion can reveal alternative etiologies that are not so commonly encountered. In this report, we present a rare case of an appendiceal collision tumor involving two distinct neoplasms as the source of the patient's pain and describe how thoughtful clinical maneuvering led to its diagnosis and treatment.

Keywords: adenocarcinoma; appendectomy; appendix; collision tumor; neoplasm; neuroendocrine tumor.