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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Normal hilar shadow in X-ray chest is produced by all except
assistant
The correct answer is  C i.e. Lower lobe veins The lower lobe pulmonary veins do not cross the hila in their course to the left atrium and therefore do not contribute to the hilar shadow. The hila is formed by? Pulmonary aeries & their main branches (most imp.)Q Upper lobe pulmonary veins Q Major bronchi (contribute little) Lymph nodes (usually not seen)