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The coronal (a) and sagittal (b) magnetic resonance images of pituitary macroadenoma with suprasellar extension into the left cavernous sinus (Knosp grade 2). The images were obtained before the first surgery in July 2010. The coronal (c) and sagittal (d) magnetic resonance images of pituitary macroadenoma with prolonged tumour growth with essential suprasellar and extension into both cavernous sinuses. The images were obtained before the second surgery in July 2012
