Cancer causative agents are called \ \ \ \ \ \ . - UP CHO - 10 September 2021

UP CHO - 10 September 2021

Pathology & Genetics

Easy

Appeared in: UP CHO - 10 September 2021

Explanation

A carcinogen is defined as any substance, radionuclide, or radiation that acts as an agent promoting carcinogenesis, the formation of cancer.
These agents can be chemical (like tobacco smoke), physical (like UV radiation), or biological (like the HPV virus).
Carcinogens work by altering a cell's genetic material (DNA) or disrupting its normal metabolic processes, leading to uncontrolled cell growth.
The term itself is derived from the Latin word for crab ('cancer'), reflecting the invasive nature of the disease.

Option B: Leukaemia is a type of cancer that affects the blood-forming tissues in the bone marrow. It is a disease state, not the agent that causes the disease.
Option C: A benign tumour is a non-cancerous (non-malignant) growth. It is characterized by cells that do not invade nearby tissue or spread to other parts of the body.
Option D: Lymphoma is a type of cancer that originates in the cells of the lymphatic system, a part of the body's immune system. It is a specific type of cancer, not a general term for a cancer-causing agent.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition of Carcinogen as background academic context rather than a clinical decision trigger.
Understanding carcinogens is fundamental to primary cancer prevention, a key nursing role that involves patient education on lifestyle modification and risk reduction.
Nurses educate patients on avoiding known carcinogens like tobacco, protecting themselves from UV radiation, getting vaccinated against oncogenic viruses (e.g., HPV, HBV), and using protective equipment in occupational settings with exposure risks.
What if? If a patient has a strong family history of a specific cancer (e.g., breast cancer with a BRCA gene mutation), the focus of nursing care shifts from just primary prevention to include secondary prevention strategies like genetic counseling and more frequent, earlier screening, as the primary causative factor is genetic rather than purely environmental.

How to Approach the Question

First, analyze the question stem to identify the key concept. The stem asks for the specific term for 'cancer causative agents'.
This is a definition-based (factual recall) question. Your goal is to find the option that matches the definition.
Evaluate each option. 'Carcinogen' is the scientific term for a cancer-causing agent.
Consider the other options to confirm they are incorrect. 'Leukaemia' and 'lymphoma' are types of cancer (diseases), not causative agents.
'Benign tumour' is a non-cancerous growth, which is distinct from cancer.
Therefore, select the option that directly defines a cancer-causing agent.

Concept Tested & Keywords

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