Fig. 1
From: Hidden colon adenocarcinoma diagnosed from mouth metastasis: case report and literature review
Clinical and histological findings. A Initial clinical photograph exhibiting a nodular lesion on the maxillary gingiva. B Microphotography revealed neoplastic cells with prominent nucleoli, hyperchromatic nuclei, mucous cells, and cystic formation. C Histopathological features showing columnar epithelium forming papilliferous areas and mucous cells. Hematoxylin and eosin stain. D Neoplastic cells present positivity for CK20 in the cytoplasm