case_images: PMC11383203_01
case_images: A) The histopathological examination of the abnormal mass found in the left tonsil of the dog revealed that the basaloid cell population (arrows) exhibited an oval and spindle shape, with limited cytoplasm and hyperchromatic nuclei (Hematoxylin and Eosin staining; 400x). B) The tumor cells were arranged in a lobular pattern (arrows), and the surface tumor cells formed solid epithelial nests (Hematoxylin and Eosin staining; 400x). C) Arrows indicate high expression of the tumor protein 63 in the tumor cells using immunohistochemical staining (100x; inset 400x).
case_images: vrf-15-387-g001.jpg
case_images: PMC11383203_01_vrf-15-387-g001.jpg
case_images: F1
case_images: As shown in Figure 1, the histopathological examination of the abnormal mass found in the left tonsil of the dog revealed tumor cells arranged in a lobular pattern. Also, as shown in Figure 1, the immunohistochemical staining of the abnormal mass located in the left tonsil of the dog showed a high expression of the tumor protein 63 in the tumor cells, further supporting the diagnosis.