<prompt> A 45 year old female patient presented with features of hypothyroidism. Histopathology is shown below. Based on histological features, what is your diagnosis?Hashimoto thyroiditisGranulomatous thyroiditisPapillary carcinoma of thyroidReidels thyroiditis  <response>: Given histopathological slide shows extensive infiltration of thyroid parenchyma by mononuclear inflammatory infiltrate, well-developed germinal centers Huhle cells. These features along with the history suggests the diagnosis of Hashimoto thyroiditis. 