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Physiological AdaptationSmoking = #1 cause

Lung CancerNCLEX cheat sheet

Lung cancer is a malignant tumor arising in the lung tissue and is the leading cause of cancer death.

26 key facts 3 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Signs

  • Persistent cough, hemoptysis, hoarseness
  • Weight loss, dyspnea, chest pain
  • Cough change in chronic smoker

Types

  • SCLC → fast, paraneoplastic SIADH
  • NSCLC → most common, slower

Risk

  • Smoking, radon, asbestos, secondhand

Report

  • SVC syndrome: face/arm swelling
  • New hemoptysis, severe dyspnea

Teach

  • Smoking cessation = key prevention
Key takeaway

Smoking is the leading risk factor; other risks include radon, asbestos, and secondhand smoke exposure.

Before you read

Test yourself first: 3 questions

Question 1 of 3

A nurse percusses a client's chest and hears a hyperresonant sound over the lung fields. This finding is most consistent with which condition?

What is lung cancer?

It is broadly classified as small cell (SCLC, aggressive, strongly smoking-related) or non-small cell (NSCLC, most common). The leading risk factor by far is cigarette smoking. Symptoms often appear late, so prognosis is frequently poor at diagnosis.

Lung Cancer illustrated

Lung cancer: a tumor within the lung
Lung cancer: a tumor within the lung. Illustration: BruceBlaus via Wikimedia Commons, CC BY 3.0.

Key points to remember

  • Smoking is the leading risk factor; other risks include radon, asbestos, and secondhand smoke exposure.
  • Early disease is often asymptomatic; a persistent cough, hemoptysis, dyspnea, hoarseness, and chest pain are common signs.
  • Small cell lung cancer is aggressive, metastasizes early, and is associated with paraneoplastic syndromes (e.g., SIADH, Cushing's).
  • It is a common cause of superior vena cava syndrome and malignant pleural effusion.
  • Diagnosis uses chest imaging and biopsy/bronchoscopy; treatment includes surgery, chemotherapy, radiation, and targeted/immunotherapy.
  • Low-dose CT screening is recommended for high-risk current/former heavy smokers.

Signs & symptoms

  • Persistent cough, hemoptysis, hoarseness
  • Weight loss, dyspnea, chest pain
  • Cough change in chronic smoker

Nursing priorities

  1. Maintain a patent airway and optimize oxygenation; position upright and provide oxygen as prescribed.
  2. Assess respiratory status, breath sounds, and effectiveness of breathing; monitor for worsening dyspnea.
  3. Manage pain and energy conservation; cluster care to reduce fatigue and oxygen demand.
  4. Support effective coughing and secretion clearance; monitor sputum for hemoptysis.
  5. Provide emotional support, smoking cessation resources, and end-of-life/palliative discussions as appropriate.

Labs & values

Sputum cytology: may show malignant cells
Chest CT/biopsy: diagnostic
Serum sodium: may be low with SIADH (normal135-145 mEq/L)
Pulmonary function tests: assess surgical candidacy

Patient teaching

  • Stop smoking and avoid secondhand smoke; provide cessation resources and support.
  • Report persistent cough, blood in sputum, worsening shortness of breath, hoarseness, or unexplained weight loss.
  • Conserve energy by pacing activities and resting between tasks.
  • Use prescribed oxygen safely (no smoking or open flames near oxygen).
  • High-risk heavy smokers should discuss low-dose CT lung cancer screening with their provider.

Red flags: report now

  • Sudden severe dyspnea, increasing hemoptysis, or signs of airway obstruction require immediate intervention.
  • Facial/neck swelling, distended neck veins (superior vena cava syndrome) need prompt reporting.
  • Acute chest pain with shortness of breath may indicate pleural effusion, pneumothorax, or pulmonary embolism.

References

Clinical references for this topic

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