Image | Statistics | Caption |
 |  | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, sometimes keratinized or necrotic with bizarre cell shapes (arrows). Inflammation, blood and necrosis in the background. (obj. 10x) |
 |  | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, sometimes keratinized or necrotic with bizarre cell shapes (arrow). Inflammation, blood and necrosis in the background. (obj. 10x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, sometimes with markedly atypical nuclei or elongated nuclei. Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, sometimes keratinized or necrotic with bizarre cell shapes. Inflammation, blood and necrosis in the background. (obj. 10x) |
 | | Invasive squamous cell carcinoma: cluster of pleomorphic malignant cells. Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, mainly of poorly differentiated type, naked nuclei. Different types of abnormal keratinized cells (ellipses). Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: cluster of pleomorphic malignant cells mainly poorly differentiated, and isolated cells more differentiated, necrotic or keratinized with abnormal shapes (ellipses). Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: one cluster of pleomorphic and poorly differentiated malignant cells and one isolated of abnormal shape cell (arrow). Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: a loose cluster of pleomorphic and poorly differentiated malignant cells and some isolated cells. Mild inflammation and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters. Inflammation, blood and necrosis in the background. (obj. 20x) |
 | | Invasive squamous cell carcinoma: cluster of pleomorphic and keratinized malignant cells and less differentiated isolated cells. Inflammation, blood and necrosis in the background. (A: obj. 20x, B: obj. 40x) |
 | | Invasive squamous cell carcinoma: loose clusters of pleomorphic poorly differentiated malignant cells. Inflammatory and necrotic background. (A, B, C and D: obj. 40x) |
 | | Invasive squamous cell carcinoma: isolated malignant cells, sometimes differentiated (spindle cells with dark nuclei on the left), without keratinization. Blood and slight inflammation in the background (necrotic in B). (A and B: obj. 40x) |
 | | Invasive squamous cell carcinoma: group of moderately to poorly differentiated malignant cells, without keratinization. Bloody background. Note a very irregular chromatin texture. (A and B: obj. 40x) |
 | | Invasive squamous cell carcinoma: poorly differentiated malignant cells (A), moderately differentiated elongated malignant cells (B). Background with blood and some leucocytes. (A and B: obj. 40x) |
 | | Invasive well differentiated and mature squamous cell carcinoma: pleomorphic malignant cells, isolated and with bizarre cell shapes. Inflammatory, bloody and necrotic background. (obj. 10x) |
 | | Invasive squamous cell carcinoma: differentiated malignant cells, mainly in dispersed clusters. Inflammation and necrosis in the background. (obj. 10x) |
 | | Invasive well differentiated keratinizing squamous cell carcinoma: pleomorphic malignant cells, more or less differentiated and with bizarre cell shapes. Inflammation and necrosis in the background. (obj. 20x) |
 | | Invasive well differentiated keratinizing squamous cell carcinoma: groups of spindle-shaped malignant cells (arrows). (obj. 40x) |
 | | Invasive well differentiated keratinizing squamous cell carcinoma: group of pleomorphic malignant cells, more or less differentiated and with spindle cell shape. (obj. 40x) |
 | | Invasive differentiated keratinizing cell carcinoma: group of pleomorphic malignant cells, moderately differentiated, occasionally elongated but without keratinization. (obj. 20x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in clusters, occasionally keratinized (arrow). Cell-in-cell image (cannibalism - ellipse). (obj. 40x) |
 | | Invasive squamous cell carcinoma: highly pleomorphic malignant cells, isolated or in loose clusters, occasionally spindly or keratinized. (A and B: obj. 40x) |
 | | Invasive squamous cell carcinoma: pleomorphic malignant cells, isolated or in loose clusters. (obj. 40x) |
