Fig. 5
From: Thyroid crisis caused by metastatic thyroid cancer: an autopsy case report
Microscopic image of the thyroid. A Nodules with thyroid follicles of various sizes invading the surrounding tissues were mainly observed (hematoxylin and eosin, low magnification). B Atypical spindle tumour cells proliferating solidly without follicles were also observed (hematoxylin and eosin, low magnification). C Enlargement of the image shown in B (hematoxylin and eosin, high magnification). After immunostaining, the spindle tumour cells were positive for cytokeratin AE1/AE3 (D), CAM5.2 (E) and PAX8 (F) (high magnification)