In sjogren syndrome salivary flow rate of each parotid becomes:: (A) 5ml/min., (B) 2ml/min., (C) 1ml/min., (D) 0.5ml/min.
Answer is D. The normal salivary flow rate of each parotid gland is 5ml/ min but in SS patients, this flow rate will be0.5ml/min.
The total uptake of radioisotope 99mTC - Pertechnetate is less in SS patients compared to normal salivary glands.
The sialography reveals formation of punctate, cavitary defects filled with radiopaque contrast media producing a Cherry blossom or branchless fruit-laden effect.
MRI of SS patients shows a "Salt and Pepper" appearance of the glands.