What characteristic differentiates a benign epithelial tumor from a carcinoma?

A benign epithelial tumor is typically characterized by its soft, movable, and sometimes pedunculated mass. This characteristic reflects its more localized and non-invasive nature. Benign tumors tend to grow slowly and their structure usually allows for easy manipulation without infiltrating surrounding tissues, making them easier to remove surgically.

In contrast, carcinomas, which are malignant epithelial tumors, often present as hard, fixed masses that may invade surrounding tissues. Their growth patterns can be aggressive, leading to more firmly adhered structures that are not movable. The rapid growth rate and presence of mitotic figures are indicators of malignancy rather than benign behavior. Mitotic figures suggest higher cellular turnover and abnormal cell division commonly found in cancerous tissues, highlighting their aggressive nature compared to benign tumors.