The risk of malignant @entity1893 is increased in primary Sj  gren syndrome. In the literature, most studies evaluating this risk were conducted in tertiary reference university hospital. So, selection bias in series exists, in particular selection of the most severe cases in tertiary reference university care centers. Some studies had also a selection bias because @entity1 were hospitalized (data were obtained from hospital discharge registries) and therefore the more severe cases were considered. Between October 1999 and November 2009, 109 adult @entity1 were admitted to our department of internal medicine (non-university hospital, secondary level of the healthcare system, hospitalized @entity1 and outpatient) with diagnosis of primary Sj  gren syndrome. Two cases of parotid gland @entity706 occurred during the period of follow-up. No other @entity706 was detected. In this study, clinically identifiable parotid gland @entity1893 occurs in 1.8% of @entity1 with primary Sj  gren syndrome. Because most @entity1893 initially involves the neck organs, meticulous imaging studies mainly focused on the cervical regions are recommended in the follow-up of @entity1 with primary Sj  gren syndrome. @entity1 whose main complaint is persistent parotid gland swelling may have a parotid biopsy in order to diagnose @entity1893 .

XXXX in primary Sj  gren syndrome.

@entity1893 :: ('MESH:D008228', 'Disease') :: ['non-Hodgkin lymphoma'] @entity1 :: ('9606', 'Species') :: ['patients', 'Patients'] @entity706 :: ('MESH:D008223', 'Disease') :: ['lymphoma']
@entity1893 :: (MESH:D008228,Disease) :: ['Parotid gland non-Hodgkin lymphoma']
