Published online Jan 21, 2014. doi: 10.3748/wjg.v20.i3.857
Revised: September 2, 2013
Accepted: September 16, 2013
Published online: January 21, 2014
Core tip: We report a case of primary effusion lymphoma (PEL)-like lymphoma in an elderly, male inflammatory bowel disease (IBD) patient on 6-mercaptopurine (6-MP) treatment. This rare lymphoma subtype is localized to serous body cavities without tumor mass formation or nodal involvement, and has been previously reported in individuals with hepatitis C virus or Epstein-Barr virus infection, in patients who underwent organ transplantation, and elderly patients This novel case in an IBD patient illustrates the importance of considering PEL-like lymphoma in IBD patients treated with 6-MP and anti-tumor necrosis factor antibodies who subsequently develop serous body cavity effusion.