Fig. 4

Histology of the thyroid gland. a Multiple follicular adenomas with a thick fibrous capsule were found in the bilateral lobes. Nodular hyperplasia was scattered in the background of the follicular adenomas (H & E stain x2 objective, FA: follicular adenoma, NH: nodular hyperplasia, C: capsule). b Most follicular adenomas had the characteristics of the oxyphilic cell variant (H & E stain x40 objective). c Nodular hyperplasia had colloid-filled follicles of variable size. It also had collections of small follicles projecting into the lumen of large actively secreting follicles (Sanderson pollsters) (H & E stain; x10 objective ). There was no evidence of malignancy and lymph nodes were normal