What is neoplasia characterized by?

Neoplasia is characterized by abnormal development of cells. This condition involves the uncontrolled proliferation of cells that no longer respond to the regulatory mechanisms that govern normal cell growth and differentiation. In neoplasia, the cells may grow rapidly and may form masses or tumors, which can be benign or malignant.

Normal cellular processes are disrupted in neoplasia, leading to a loss of the orderly structure and function typically seen in healthy tissue. These abnormal cells can invade nearby tissues and may spread to other parts of the body, particularly in the case of malignant tumors. Understanding the nature of neoplasia is essential in oncology as it underscores the mechanisms underlying tumor formation and progression, which are critical for developing treatment strategies.

The other options reflect processes that do not align with the definition of neoplasia: controlled cell growth, normal cell development, and cellular healing indicate a regulated and healthy state of cell activity, which is distinctly different from the chaotic and unregulated proliferation seen in neoplasia.