Final answer:
Non-malignant tumors, or benign tumors, are masses of cells that grow uncontrollably but do not spread to other parts of the body. They do not invade surrounding tissues or form metastases, making them less dangerous than malignant tumors. Some benign tumors may require removal if causing discomfort or have the potential to become cancerous.
Step-by-step explanation:
Non-malignant tumors, also known as benign tumors, are defined by their inability to spread to other parts of the body. These tumors are the result of cells that divide uncontrollably but remain localized within the tissue where they originated. Unlike malignant tumors, benign tumors do not invade neighboring tissues or form metastases, which makes them less dangerous. However, they can still cause problems if they press against vital organs or cause discomfort to the patient.
Benign tumors may grow slowly and do not typically pose a threat to life. They often can be surgically removed, and the likelihood of them becoming cancerous is generally low. Nonetheless, certain types of benign tumors have the potential to become cancerous over time, and continuous monitoring could be advised based on the tumor type and location. Some benign tumors, depending on their location, may also cause functional impairments or pain, warranting removal for relief.
Pre-malignant or non-invasive tumors, such as atypia, dysplasia, and carcinoma in situ, do not yet invade other tissues but may have the potential to progress to cancer if left untreated. Therefore, distinguishing between these types of growths is critical for appropriate treatment and management.