Popcorn calcification is seen in:
APulmonary hamartoma
BBronchogenic carcinoma
CTuberculosis
DPulmonary metastases
A 57-year-old man presents with hemoptysis and generalized weakness. His symptoms began with small-volume hemoptysis 4 weeks ago, followed by progressive weakness, fatigue, and weight loss over the past 2 weeks. He has a 45-pack-year history of cigarette smoking. Physical examination is unremarkable, and laboratory studies reveal mild anemia and hyponatremia. Chest x-ray shows a 5-cm left, mid-lung field mass with mediastinal lymphadenopathy. MR scan of the brain is normal. What is the most likely cause of his symptoms?
ABronchial carcinoid tumor
BLung adenocarcinoma
CSmall cell lung carcinoma
DLung abscess
Which condition is characterized by a specific appearance on CT scans that resembles small centrilobular nodules with branching linear structures?
APulmonary tuberculosis
BSilicosis
CPulmonary hydatid cyst
DSmall cell carcinoma
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