<prompt> Pop-corn calcification is seen with?Pulmonary HamartomaAspergillosisBroncho-Alveolar cancerPulmonary Embolism  <response>: Ans. a Pulmonary HamartomaRef: Harrison 19th ed. 515-16 Popcorn calcification is virtually diagnostic on chest radiographs for pulmonary hamartoma. It characteristically appears as well-defined, solitary pulmonary nodules; they may show varying patterns of calcification, including an irregular popcorn, stippled, or curvilinear pattern, or even a combination of all 3 patterns.. 