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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Magnetic resonance imaging (mri) in a 38-year-old man with adrenocorticotropic hormone–secreting adenoma. (a) Pretreatment image shows a large postoperative residual tumour. (b) Follow-up image 4 years after fractionated stereotactic radiotherapy shows complete response.