Histological examination of the pituitary gland demonstrates areas of architectural distortion and acinar expansion with displaced reticulin network, staining positively for ACTH, with adjacent normal pituitary tissue. On Panel C, a few cells showed Crooke’s changes with replacement of cytoplasmic granules of basophil cells by homogeneous hyaline material (see arrow).
A. Pituitary Adenoma hematoxylin and eosin (H&E) 4×
B. Pituitary Adenoma with Immunostaining for ACTH 4×
C. Pituitary Adenoma H&E 40 x,
Histological examination of the thyroid gland demonstrates medullary thyroid carcinoma with characteristic nests of spindle shaped cells and amyloid deposits.
D. Medullary carcinoma of the thyroid 10×
E. Medullary carcinoma of the thyroid 20×