<prompt> A biopsy of the lower lip salivary glands showed replacement of parenchymal tissue by lymphocytes. The patient also had xerostomia and keratoconjunctivitis sicca. These findings are indicative of which of the following?LymphomaCrohns diseaseMumpsSjögrens syndrome  <response>: This triad of signs defines primary Sjögrens syndrome. The patient has secondary Sjögrens syndrome if rheumatoid arthritis or other autoimmune disease is present 