Question:
A 55-year-old chronic smoker presents with enlarged, painful toes and fingers with swollen joints, dyspnoea, and hemoptysis. X-ray shows elevated periosteum. What is the probable diagnosis?
A 55-year-old chronic smoker presents with enlarged, painful toes and fingers with swollen joints, dyspnoea, and hemoptysis. X-ray shows elevated periosteum. What is the probable diagnosis?
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Paraneoplastic Syndromes of Lung Cancer:
- Squamous Cell: PTHrP (Hypercalcemia).
- Small Cell: ACTH (Cushing's), ADH (SIADH), Lambert-Eaton Myasthenic Syndrome.
- Adenocarcinoma/NSCLC general: HPOA (Clubbing, periostitis, arthritis).
- Squamous Cell: PTHrP (Hypercalcemia).
- Small Cell: ACTH (Cushing's), ADH (SIADH), Lambert-Eaton Myasthenic Syndrome.
- Adenocarcinoma/NSCLC general: HPOA (Clubbing, periostitis, arthritis).
Updated On: Sep 3, 2026
- Hypertrophic pulmonary osteoarthropathy
- Paget disease
- Thyroid acropachy
- Scleromyxedema
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The Correct Option is A
Solution and Explanation
Concept:
The clinical triad of digital clubbing, symmetrical polyarthritis, and periostitis of long bones, particularly in a patient with a strong smoking history and pulmonary symptoms, is a classic paraneoplastic syndrome presentation.
Explanation:
• The patient is a chronic smoker presenting with dyspnea and hemoptysis, which raises the highest suspicion for an underlying primary bronchogenic carcinoma (lung cancer).
• Hypertrophic Pulmonary Osteoarthropathy (HPOA) is a systemic disorder characterized by the clinical triad of:
1. Digital clubbing (enlarged fingers/toes).
2. Arthritis/arthralgia (painful, swollen joints).
3. Periostitis (proliferation of the periosteum of tubular bones, appearing as "elevated periosteum" on X-ray, leading to bone pain).
• HPOA is most famously known as a paraneoplastic syndrome associated with Non-Small Cell Lung Cancer (NSCLC), particularly pulmonary adenocarcinoma and squamous cell carcinoma.
• Paget disease (Option B) causes disorganized bone remodeling with bowing and fractures, not the classic clubbing/periostitis triad driven by a lung lesion.
• Thyroid acropachy (Option C) is a rare manifestation of autoimmune thyroid disease (Graves') presenting with clubbing and periostitis, but it lacks the respiratory symptoms (hemoptysis) and the specific smoking context provided.
Final Answer:
The presentation of lung cancer symptoms coupled with clubbing, arthritis, and radiographic periostitis is the classic presentation of Hypertrophic Pulmonary Osteoarthropathy (HPOA).
The clinical triad of digital clubbing, symmetrical polyarthritis, and periostitis of long bones, particularly in a patient with a strong smoking history and pulmonary symptoms, is a classic paraneoplastic syndrome presentation.
Explanation:
• The patient is a chronic smoker presenting with dyspnea and hemoptysis, which raises the highest suspicion for an underlying primary bronchogenic carcinoma (lung cancer).
• Hypertrophic Pulmonary Osteoarthropathy (HPOA) is a systemic disorder characterized by the clinical triad of:
1. Digital clubbing (enlarged fingers/toes).
2. Arthritis/arthralgia (painful, swollen joints).
3. Periostitis (proliferation of the periosteum of tubular bones, appearing as "elevated periosteum" on X-ray, leading to bone pain).
• HPOA is most famously known as a paraneoplastic syndrome associated with Non-Small Cell Lung Cancer (NSCLC), particularly pulmonary adenocarcinoma and squamous cell carcinoma.
• Paget disease (Option B) causes disorganized bone remodeling with bowing and fractures, not the classic clubbing/periostitis triad driven by a lung lesion.
• Thyroid acropachy (Option C) is a rare manifestation of autoimmune thyroid disease (Graves') presenting with clubbing and periostitis, but it lacks the respiratory symptoms (hemoptysis) and the specific smoking context provided.
Final Answer:
The presentation of lung cancer symptoms coupled with clubbing, arthritis, and radiographic periostitis is the classic presentation of Hypertrophic Pulmonary Osteoarthropathy (HPOA).
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