Respiratory Pathology — MCQs

In primary pulmonary hypertension, what is the basic abnormality in gene?

A 63-year-old woman with chronic bronchitis presents with shortness of breath. A chest X-ray reveals a 2-cm 'coin lesion' in the upper lobe of the left lung. A CT-guided lung biopsy is obtained. Which of the following describes the histologic features of this lesion if the diagnosis is hamartoma?

Which of the following hormonal levels is NOT increased in small cell carcinoma of the lung?

Pancoast tumors are known to cause which of the following complications?

What is the most likely precursor to bronchiectasis?

Eggshell calcification of lymph nodes is suggestive of which condition?

Which of the following is characteristic of adult respiratory distress syndrome?

Which of the following statements is true regarding non-specific interstitial pneumonia?

A 67-year-old male with a history of chronic smoking presents with hemoptysis and cough. Bronchoscopic biopsy from a centrally located mass shows an undifferentiated tumor histopathologically. Which immunohistochemical marker would be most useful to make a proper diagnosis?

A 45-year-old man incurs blunt chest trauma. On examination, he has marked right chest wall pain. A chest radiograph shows a fractured 7th rib on the right side. Over the next 2 days, he has subcutaneous soft tissue swelling with nonpainful crepitus on palpation of the right chest wall. Leakage of which of the following is most likely producing this swelling?