[MALT lymphoma with parotid and gastric involvement during Gougerot-Sjögren syndrome].

Sjören syndrome favors the development of lymphoma, particularly in the salivary glands with MALT lymphomas. The differential diagnosis with benign lymphoepithelial sialadenitis can be difficult. A 78-year-old woman had an oculo-buccal sicca syndrome for 10 years and developed parotid hypertrophy. The first biopsy, performed 7 years before the present investigation had showed chronic lymphoepithelial sialadenitis. A second biopsy showed MALT lymphoma. Search for extension revealed a second gastric localization of the lymphoma. This patient had a particular immunophenotype, showing a CD5+ tumoral population frequently observed in mantel lymphomas and usually lacking in MALT lymphomas. Recently, however, another case similar to our own, has been reported in the literature. The observations raise the problem of distinguishing between mantel lymphoma and MALT lymphoma.