Most common risk factor for laryngeal cancer is -

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Explanation

Smoking is the single most common and significant risk factor for laryngeal cancer.
Carcinogens in tobacco smoke directly expose the mucosal surface of the larynx to damage, leading to cellular changes and cancer.
According to medical literature, tobacco use is identified as the primary cause in the majority of laryngeal cancer cases.

Option A: While chewing tobacco is a major risk factor for head and neck cancers, its primary association is with cancers of the oral cavity (mouth, gums, cheeks) due to direct contact.
Option C: Alcohol abuse is a significant risk factor, but it is not the most common single factor. Its risk is dramatically amplified when combined with smoking.
Option D: Environmental and occupational pollutants (like asbestos, wood dust, paint fumes) are known carcinogens and risk factors for laryngeal cancer, but they account for a much smaller percentage of cases compared to smoking.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Risk factors for laryngeal cancer as background academic context rather than a clinical decision trigger.
Nurses play a crucial role in primary prevention by educating patients about the risks of smoking and alcohol use and providing resources for cessation.
During patient assessment, it is vital to screen for persistent hoarseness (lasting more than 2 weeks), a key early symptom of laryngeal cancer, especially in patients with a history of smoking.
What if? If a patient reports both heavy smoking and heavy alcohol consumption, the nurse should recognize that their risk is not just added but multiplied (synergistic effect). This patient requires high-priority counseling and referral for screening.

How to Approach the Question

First, identify the core of the question: it asks for the 'most common' risk factor for a specific disease (laryngeal cancer).
Analyze the options provided. All are potential risk factors for various cancers.
Recall or deduce the primary route of exposure for laryngeal cancer. The larynx is in the airway, making inhaled substances the most likely primary culprits.
Compare 'Smoking' (inhaled) with 'Chewing tobacco' (oral contact). Smoking directly exposes the larynx to carcinogens, making it a more direct and significant risk factor for this specific location.
Evaluate the other options. While alcohol and pollution are risks, epidemiological data consistently show that smoking is the leading cause.
Select the option that represents the highest and most frequent risk in the general population.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 2 Part 1 p. 45-47

Practise the full RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Attempt every question from this paper in a timed mock, then review the full solution for each one.