What dose constraints do you use when treating gastric MALT or DLBCL with radiation therapy?  

Treatment of the entire stomach is recommended for gastric MALT lymphoma. A dose of 24-30 Gy is recommended, generally in 1.5 Gy fractions to limit acute toxicity. I am starting to utilize 24 Gy more frequently though, most studies have used 30 Gy. Gastric MALT tends to be multifocal, is not well vi...

Agree with Dr. @Kelsey's answer but would add the following comments: Lymphomas are one of the few malignancies for which randomized dose/response data are available. For indolent histologies, including gastric malt, 24 Gy is equivalent to larger doses, and superior to 4 Gy. There is no establish...