Current Concepts on Dedifferentiation/High-Grade Transformation in Salivary Gland Tumors

Figure 1

Adenoid cystic carcinoma with transformation to a moderately differentiated adenocarcinoma (a) and (b) and to poorly differentiated carcinoma (c) and (d). (a) and (b) H&E original magnification 200x and (c) and (d), 400x.