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. 2023 Mar 13;41(8):808–829. doi: 10.1007/s11604-023-01407-0

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© The Author(s) 2023, corrected publication 2023

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Fig. 8 — Pituitary abscess. An approximately 20-year-old female with headaches and nausea. Sagittal T1WI (a) and sagittal T2WI (b) show a cystic mass within the sellar turcica to the suprasellar region (arrow). Sagittal T2WI (b) failed to show hypointense regions of the peripituitary region (parasellar T2-dark sign). c Sagittal contrast-enhanced T1WI shows contrast enhancement of the cyst wall (arrow) with an enlarged pituitary stalk (arrowhead). d Diffusion-weighted imaging (DWI) shows marked hyperintensity inside (mean apparent diffusion coefficient = 0.5 × 10^–3 mm²/s) (arrow)