Ectopic Germinal Center-Like Structures in Minor Salivary Gland Biopsy Tissue Predict Lymphoma Occurrence in Patients With Primary Sjögren's Syndrome.

The presence of ectopic GC-like structures in MSG biopsy tissue is associated with the risk of lymphoma in patients with primary SS. These data reinforce the major role of MSG biopsy tissue in primary SS, for the identification a priori of a subgroup of patients with the highest risk of lymphoma.