What is the definition of a neoplasm?

A neoplasm is defined as an abnormal growth of tissue that arises from excessive and uncontrolled cell division. This definition encompasses both benign and malignant tumors, highlighting the core characteristic of neoplasia: the unregulated proliferation of cells. Such growths can occur in various tissues and can have different behavioral characteristics, depending on various factors, including their cellular origin and genetic mutations.

Understanding this definition is crucial in cytology, as the identification and classification of neoplasms play a vital role in diagnosing potential cancers and other pathological conditions. The term emphasizes the disruption of normal cellular regulation and has implications for treatment and prognosis in medical practice.