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Reduced volume of abnormal cavernous sinus-enhancing chronic inflammatory tissue in granulomatosis with polyangiitis

Axial intracranial contrast-enhanced T1-weighted MR image after six pulses of cyclophosphamide in a woman with granulomatosis with polyangiitis causing cavernous sinus syndrome and diabetes insipidus. There is reduction in the volume of abnormal cavernous sinus-enhancing chronic inflammatory tissue (arrows) compared with pre-treatment imaging.

(Source: Peters JE, Gupta V, Saeed IT, Offiah C, Jawad AS. Severe localised granulomatosis with polyangiitis [Wegener's granulomatosis] manifesting with extensive cranial nerve palsies and cranial diabetes insipidus: a case report and literature review. BMC Neurol 2018;18[1]:59. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)