AIM EXAM REASONING
KMU Past Paper Practice
Lung Malignancy & Cardiorespiratory Manifestations of Systemic Disease
Final Year MBBS • 20 A-Type Single Best Answer MCQs
MCQ 1
Question:
A 59-year-old woman with a previously treated malignancy elsewhere in the body develops several bilateral pulmonary nodules on follow-up imaging. Which classification best describes these lung lesions?
Primary small-cell carcinoma
Secondary metastatic pulmonary tumors
Primary pleural mesothelioma
Primary pulmonary carcinoid tumors
Primary large-cell carcinoma
Correct Answer: Secondary metastatic pulmonary tumors
Explanation: Lung lesions arising from a known malignancy at another primary site are classified as secondary metastatic deposits rather than primary lung tumors.
MCQ 2
Question:
A patient with suspected lung malignancy has a chest radiograph showing a right hilar mass and ipsilateral pleural effusion. Which investigation best defines the primary lesion, lymph nodes, pleura and adjacent thoracic structures before tissue sampling is planned?
Pulmonary function testing
Pleural fluid biochemistry
Electrocardiography
Contrast-enhanced CT of the chest
Echocardiography
Correct Answer: Contrast-enhanced CT of the chest
Explanation: CT provides detailed anatomical assessment of the lung lesion, nodes, pleura and neighboring structures and helps guide the next diagnostic step.
MCQ 3
Question:
A man with bronchogenic carcinoma develops progressive dyspnea. Examination reveals reduced expansion and markedly reduced breath sounds over the affected hemithorax. Imaging confirms a large pleural collection. Which complication best accounts for these findings?
Malignant pleural effusion
Cardiac conduction block
Pulmonary arterial hypertension
Respiratory muscle weakness
Pericardial inflammation
Correct Answer: Malignant pleural effusion
Explanation: Pleural involvement by lung cancer can produce malignant effusion, limiting lung expansion and causing breathlessness with reduced breath sounds.
MCQ 4
Question:
A patient with lung carcinoma complains of progressive exertional dyspnea. One hemidiaphragm is elevated on imaging and moves poorly. Which local tumor effect most plausibly explains this finding?
Pleural fluid cytology failure
Systemic vascular inflammation
Metastatic liver involvement
Pulmonary interstitial fibrosis
Phrenic nerve involvement
Correct Answer: Phrenic nerve involvement
Explanation: Local invasion of the phrenic nerve can impair diaphragmatic movement, producing an elevated hemidiaphragm and worsening breathlessness.
MCQ 5
Question:
A patient with bronchogenic carcinoma develops painful swelling around the wrists and ankles with digital clubbing. There is no evidence of direct tumor invasion at these sites. Which type of manifestation is most likely?
Metastatic skeletal destruction
Pleural restriction syndrome
Hypertrophic pulmonary osteoarthropathy
Pulmonary vascular obstruction
Respiratory muscle failure
Correct Answer: Hypertrophic pulmonary osteoarthropathy
Explanation: Hypertrophic pulmonary osteoarthropathy is a recognized systemic manifestation of lung malignancy and can occur without direct skeletal invasion.
MCQ 6
Question:
A patient with advanced bronchogenic carcinoma develops new focal limb weakness and headache. Which clinical interpretation is most appropriate?
This most likely represents pleural restriction
Neurological metastatic disease must be considered
This indicates isolated bronchial obstruction
The findings are typical of pericarditis
This establishes pulmonary fibrosis
Correct Answer: Neurological metastatic disease must be considered
Explanation: New focal neurological deficits in established lung cancer should raise concern for metastatic involvement of the nervous system.
MCQ 7
Question:
A patient with widespread lung malignancy has severe pain, persistent cough and distressing breathlessness despite tumor-directed treatment. Which component should remain an active part of management?
Repeated tissue sampling at every visit
Stopping all symptom-directed medication
Avoidance of psychosocial assessment
Observation until respiratory failure develops
Active palliative and symptom-directed care
Correct Answer: Active palliative and symptom-directed care
Explanation: Symptom relief remains active treatment in advanced malignancy and should accompany appropriate oncological care.
MCQ 8
Question:
A man with suspected pleural mesothelioma has circumferential pleural thickening on CT. Before treatment planning, what is the most important contribution of the CT study?
Assessment of pleural distribution and local extent
Direct measurement of tumor histology
Confirmation of myocardial inflammation
Measurement of cardiac conduction velocity
Determination of respiratory muscle strength
Correct Answer: Assessment of pleural distribution and local extent
Explanation: CT defines the anatomical extent of pleural disease and its relationship to adjacent structures, while histology still requires tissue.
MCQ 9
Question:
Two patients with pleural mesothelioma have similar symptoms. One has limited disease and good functional status, while the other has extensive disease and poor functional status. Which factor best explains why their management options and outcomes may differ?
Sputum color at presentation
Presence of cough alone
Whether the first test was radiography
Disease extent and patient functional status
Presence of mild seasonal allergy
Correct Answer: Disease extent and patient functional status
Explanation: Mesothelioma prognosis and treatment selection depend importantly on stage, tumor extent, functional status and overall fitness.
MCQ 10
Question:
A patient with systemic disease presents with pleuritic chest pain. Echocardiography shows a new pericardial effusion. Which complication becomes clinically important if the effusion produces significant hemodynamic compromise?
Pulmonary fibrosis
Bronchial obstruction
Hemodynamic impairment from pericardial fluid
Primary lung collapse
Respiratory muscle fatigue
Correct Answer: Hemodynamic impairment from pericardial fluid
Explanation: Significant pericardial fluid can impair cardiac filling and circulation; this represents dangerous cardiovascular involvement of systemic disease.
MCQ 11
Question:
A patient with a multisystem inflammatory disorder develops palpitations. Which investigation should be obtained first to determine whether the systemic disease has produced a rhythm or conduction abnormality?
Electrocardiography
Pleural fluid analysis
Chest CT alone
Pulmonary function testing
Bronchoscopy
Correct Answer: Electrocardiography
Explanation: ECG directly assesses cardiac rhythm and conduction and is an appropriate initial test when electrical involvement is suspected.
MCQ 12
Question:
A patient with systemic inflammatory disease develops chest discomfort and biochemical evidence suggesting myocardial injury. Which test category is most directly useful for supporting the presence of myocardial damage?
Pleural cytology
Pulmonary function indices
Sputum microscopy
Arterial oxygen saturation alone
Cardiac biomarkers
Correct Answer: Cardiac biomarkers
Explanation: Cardiac biomarkers can support assessment of myocardial injury or stress when systemic disease is suspected to involve the heart.
MCQ 13
Question:
A patient with systemic disease develops progressive dyspnea. Examination reveals elevated jugular venous pressure and peripheral edema, while the lungs have few crackles. Which form of pulmonary involvement should be considered because it can lead to right-heart strain?
Large-airway inflammation
Pulmonary vascular involvement
Isolated pleural irritation
Bronchial mucus retention
Upper-airway obstruction
Correct Answer: Pulmonary vascular involvement
Explanation: Pulmonary vascular disease can raise pulmonary pressures and produce right-heart strain with systemic venous congestion.
MCQ 14
Question:
A patient with a systemic disorder develops persistent wheeze and cough. Imaging does not show significant interstitial or pleural disease. Which pulmonary compartment is most likely responsible for this clinical pattern?
Pulmonary interstitium
Pleural cavity
Pericardial space
Airways
Cardiac valves
Correct Answer: Airways
Explanation: Airway involvement produces airflow limitation, making cough and wheeze more characteristic than the patterns caused by pleural or interstitial disease.
MCQ 15
Question:
A patient with systemic disease has progressive exertional breathlessness. Initial chest radiography is abnormal, and further assessment confirms pulmonary involvement. Which investigation is most useful for documenting the physiological effect and following change over time?
Coronary angiography
Pleural tissue biopsy in every case
Pulmonary function testing
Cardiac rhythm monitoring alone
Bronchoscopic biopsy in every case
Correct Answer: Pulmonary function testing
Explanation: Pulmonary function tests characterize physiological impairment and can help monitor progression or response in systemic pulmonary disease.
MCQ 16
Question:
A patient with systemic pulmonary disease has increasing respiratory distress. Which assessment most directly establishes the physiological severity of impaired oxygenation?
Tumor histology
Pleural thickness alone
Sputum appearance
Lymph-node size alone
Assessment of oxygenation
Correct Answer: Assessment of oxygenation
Explanation: Oxygenation assessment directly evaluates physiological respiratory compromise and helps identify clinically significant pulmonary dysfunction.
MCQ 17
Question:
A patient with a connective-tissue disease has dyspnea, fine inspiratory crackles and evidence of interstitial lung involvement. Which mechanical change most directly contributes to the breathlessness?
Increased airway diameter
Reduced lung compliance
Increased ventricular contractility
Reduced pleural sensitivity
Accelerated AV conduction
Correct Answer: Reduced lung compliance
Explanation: Interstitial disease makes the lungs stiffer, reducing compliance and increasing the work of breathing during exertion.
MCQ 18
Question:
A patient with systemic disease develops new dyspnea. Examination reveals bilateral fine crackles, while echocardiography shows normal ventricular function and no significant pericardial effusion. Which interpretation is most appropriate?
Primary pulmonary involvement should be investigated further
The symptoms must be due to valvular disease
Normal echocardiography excludes systemic organ involvement
The findings establish bronchogenic carcinoma
Pleural mesothelioma is confirmed
Correct Answer: Primary pulmonary involvement should be investigated further
Explanation: Normal major cardiac findings do not exclude pulmonary manifestations; crackles and dyspnea should redirect assessment toward the lungs.
MCQ 19
Question:
A patient with systemic disease develops both reduced ventricular function and diffuse pulmonary abnormalities. Which statement best reflects the clinical significance of this pattern?
Only the pulmonary abnormality requires follow-up
Only the cardiac abnormality determines prognosis
The abnormalities should be assumed unrelated
Multiorgan cardiorespiratory involvement may indicate more severe systemic disease
No further assessment is needed if symptoms are mild
Correct Answer: Multiorgan cardiorespiratory involvement may indicate more severe systemic disease
Explanation: Simultaneous cardiac and pulmonary involvement increases functional burden and may adversely affect prognosis, requiring integrated assessment.
MCQ 20
Question:
A patient with systemic inflammatory disease has improvement in systemic symptoms after treatment, but cardiac function continues to deteriorate on follow-up. Which interpretation should guide management?
The organ abnormality can be ignored once systemic symptoms improve
Cardiac deterioration confirms primary lung malignancy
Persistent organ dysfunction requires reassessment and organ-specific management
Improvement in systemic symptoms guarantees cardiac recovery
Follow-up investigations should be discontinued
Correct Answer: Persistent organ dysfunction requires reassessment and organ-specific management
Explanation: Clinical improvement of the systemic illness does not guarantee reversal of established organ injury; deterioration requires continued monitoring and targeted management.
