1 MCQs in Radiology for NEET PG
A 65-year-old man with a 50 pack-year smoking history presents with hemoptysis, productive cough, and 8 kg weight loss over 3 months. PA chest radiograph shows a right hilar mass with complete right upper lobe atelectasis, characterized by increased opacity of the RUL, upward displacement of the horizontal fissure, elevation of the right hemidiaphragm, and rightward mediastinal shift. The structure marked **A** demonstrates the classic 'Golden S sign' — a concave inferior border of the collapsed lobe meeting the convex contour of the central mass. Which of the following histologic types is MOST commonly associated with this central endobronchial presentation and smoking history?
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