1 MCQs in Surgery for NEET PG
A 52-year-old man presents with progressive loss of vision in the superior temporal fields bilaterally over 3 months. MRI of the pituitary shows a 15 mm sellar mass with suprasellar extension and characteristic waist constriction at the level of the diaphragma sellae, creating a "snowman" appearance on coronal imaging. The structure marked **A** in the diagram demonstrates this classic morphology. Which of the following best explains the specific pattern of visual field loss observed in this patient?
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