<prompt> 25 yr old male presents with a diffuse thyroid swelling Biopsy shows intense lymphocytic infiltration along with Huhle cell change TSH is increased DiagnosisGraves DiseaseHashimotos thyroiditisFollicular carcinomamedullary thyroid carcinoma  <response>: Hashimoto;s thyroiditis is the most common type of thyroiditis It is also known as lymphocytic thyroiditis due to an intense infiltration of the gland ref : bailey and love 27th ed 