Irregular Cervicothoracic Nerve Sheaths on Digital Subtraction Myelography: A CSF-Venous Fistula Mimic. - Patel A; Verdoorn J; Madhavan AA; Benson J; Brinjikji W; Johnson-Tesch B; Habibi P; Mark IT (AJNR. American journal of neuroradiology, 2025)