The grading of biopsies is as follows:
It is to look at the lymphocytes, histiocytes, and plasms cells present (NOT salivary glands). Although, they look at the condition of the glands as well--but that is NOT the determining factor for diagnosis. They determine how many focuses are present within a 4 mm sq area. **A focus= an aggregate of 50 of more lymphcytes, histiocytes, and plasma cells.
Grading: (lymphocytes, histocytes, and plasma cells)
0 absent
1 slight infiltrate
2 moderate infiltrate or less then one focus**
3 one focus present
4 more then one focus present
Anything graded above grade 2 is positive for Sjogren's
This is from the Greenspan, et al " The Histopathy of Sjogren's Syndrome in Labial Salivary Gland Biopsy", 1974
Mine was done at Johns Hopkins and this scale was printed right along with my details results of what they found and how significant the lymphoid activity was. It's scary to think that some are getting result with just a positive/negative wording and NO explanation or details of what was found. I would demand to see the scale the pathologist used.