The cells above the stratum basale were polygonal cells with central nucleus and cytoplasm filled with rough endoplasmic reticulum, ribosome, golgi apparatus and tonofibril.
The necrotic epithelium becomes embedded in exuding fibrin and red and white cells,so that a grayish pseudomembrane is formed-commonly over the tonsils,pharynx or larynx.
Note the clear vacuoles in the colloid next to the epithelium where the increased activity of the epithelium to produce increased thyroid hormone has led to scalloping out of the colloid.