PT - JOURNAL ARTICLE AU - Jethwa, Hannah AU - Savage, Louis TI - Small cell lung cancer presenting with a left iliac fossa mass AID - 10.1136/bcr-2013-200857 DP - 2013 Nov 14 TA - BMJ Case Reports PG - bcr2013200857 VI - 2013 4099 - http://casereports.bmj.com/content/2013/bcr-2013-200857.short 4100 - http://casereports.bmj.com/content/2013/bcr-2013-200857.full AB - We report a 59-year-old lifelong smoker with severe chronic obstructive pulmonary disease who presented with an acute onset 3-day history of left iliac fossa pain and abdominal distension. Clinical examination revealed a palpable mass in the left iliac fossa. The differential diagnosis was that of a diverticular abscess or colonic tumour. She subsequently underwent a CT scan which showed extensive metastatic liver disease from a primary lung tumour, with hepatomegaly abutting the anterior abdominal wall in the left iliac fossa.