what is malt
MALT Lymphoma - Definition. MALT lymphoma is an uncommon form of Non-Hodgkin Lymphoma (NHL). MALT stands for 'mucosa-associated lymphoid tissue'. Unlike most other lymphomas that occur in lymph nodes (or lymph glands), this lymphoma arises from lymph tissue present in the lining of some other organs of the body. MALT lymphoma is also medically known as an extranodal marginal zone B-cell lymphoma.