Fig. 5

Microscopic findings of the gingival mass in the tuberous sclerosis complex (TSC) patient. a Low-power magnification view showing the tumor covered with hyperplastic squamous epithelium (hematoxylin-eosin staining; magnification, 10×). b Higher magnification showing a wreathlike arrangement of nuclei in interspersed cells, resembling Touton giant cells (hematoxylin-eosin staining; magnification, 200×). c Ectatic blood vessels surrounded by proliferating tumor cells (hematoxylin-eosin staining; magnification, 100×). d Numerous pleomorphic, stellate-shaped, and plump fibroblasts (hematoxylin-eosin staining; magnification, 200×). e Typical plasma cells around mass (hematoxylin-eosin staining; magnification, 200×)