Neoplasms is a chapter in ICD-11 that encompasses diseases characterized by abnormal and uncontrolled growth of cells, which can form tumors or masses and may interfere with normal body functions. These conditions include both benign and malignant growths, as well as neoplasms of uncertain or unknown behavior. The chapter classifies neoplasms according to their site of origin, tissue type, and biological behavior, providing a structured approach to understanding the wide spectrum of tumor-related conditions.
This chapter plays a crucial role in cancer diagnosis, treatment planning, research, and epidemiological tracking. It includes solid tumors and hematological malignancies, such as leukemias and lymphomas, and supports standardized reporting across healthcare systems. Accurate classification of neoplasms helps clinicians assess prognosis, select appropriate therapies, and monitor disease outcomes, while also enabling public health authorities to analyze cancer trends and develop effective prevention and control strategies.