Figure 2

Resected specimens and histopathological findings (hematoxylin and eosin stain). (A) The specimen obtained by needle biopsy shows typical histopathologic features of pleomorphic adenoma (PA). Bar = 100 μm. (B) The cut surface of the excised tumor is glistening, heterogeneous, and tan. Bar = 10 mm. (C) The loupe image shows that the tumor is completely encapsulated. The malignant component is located in the central area of the tumor. The arrowhead shows the labial mucosa. The dotted lines indicate the squamous cell carcinoma (SCC) component. Bar = 10 mm. (D) The unclear borderline between the PA and SCC components at low magnification. Arrowheads and asterisks show ductal structures and well-differentiated squamous cell component, respectively. Bar = 100 μm. (E) High magnification of Figure 2D. Bar = 50 μm. (F) The PA region. Bar = 100 μm. (G) The SCC region. Arrows show mitotic figure of cancer cells. Bar = 50 μm.