Cancer of unknown primary (CUP) presenting as a Spigelian hernia: a case report

Cancer of unknown primary (CUP) is a well-known entity that can present in a multitude of clinical presentations. Based on the extent and organ of involvement, the presentation will be varied. For instance, patients presenting with axillary lymphadenopathy would lead toward a primary breast cancer, whereas patients presenting with abdominal distention due to ascites would tend toward a gastrointestinal origin. We present a case of a 73-year-old female who presented with an abdominal wall mass; on laparoscopy, she was found to have a spigelian hernia due to an omental metastatic lesion from a CUP.