Tumor and Neoplasia Quiz

Definition of Neoplasia

• A tumor or neoplasia is a new growth of tissue that usually forms a mass, resulting from abnormal cell proliferation.

Malignant Neoplasm

• A malignant neoplasm is a type of tumor that is cancerous, meaning it has the ability to invade and spread to other parts of the body.

Characteristics of Cancer Cells

• Cancer cells differ from normal cells in that they exhibit uncontrolled growth, do not respond to growth-regulating signals, and can invade and spread to other parts of the body.
• Cancer cells are characterized by genetic mutations, altered gene expression, and abnormal cell division.

Causes of DNA Damage

• The main cause of DNA damage leading to cancer is genetic mutations resulting from environmental factors, such as radiation, viruses, and carcinogens.

Pathogenesis of Cancer

• The pathogenesis of cancer is primarily due to genetic mutations, which lead to the uncontrolled growth and proliferation of abnormal cells.
• The process of cancer development involves initiation, promotion, and progression stages.

Etymology of Neoplasia

• The term "Neoplasia" has a Greek origin, meaning "new growth" or "new formation".
• The Greek meaning of the term "Neoplasia" is a new growth of tissue.

Distinctive Features of Cancer Cells

• What distinguishes cancer cells from normal cells is their ability to invade and spread to other parts of the body, and their uncontrolled growth.

Environmental Factors

• Environmental factors that can cause DNA damage leading to cancer include radiation, viruses, and carcinogens.
• The main cause of an interaction leading to cancer is the exposure to environmental factors that damage DNA.