OMG - YES Lymphoma and Celiac can be related.
Please stay on the gluten free diet if you have Celiac. My husband was diagnosed with Celiac in Dec. 2002, in Feb. 2003 he was diagnosed with lymphoma after a bowel perforation and died in March 2003 - only 11 days later.
My husband saw many doctors for over a year and no one found out that he had Celiac...