Andrew L Callen MD
@AndrewCallenMD
Associate Professor, Neuroradiology and Neurology - Director, CU CSF Leak Program - University of Colorado Anschutz Medical Campus - Alumni: UCSF - #CSFLeak
Proud to have co-chaired our 2nd Canadian SIH Conference. Grateful to our amazing US & Canadian faculty—together we push for more awareness & improved care for SIH across Canada.@SpinalCSFCanada @DrIanCarroll @WouterSchievink@AndrewCallenMD
Thank you to everyone who participated in, attended, and contributed to the success of the 2nd Canadian SIH Conference! This event would not have been possible without the dedication of our incredible speakers, organizing committee, board members, volunteers & our sponsors.
Thank you to @BaharehCloutier and @SpinalCSFCanada for hosting an incredible conference this past weekend. Such a fantastic group of physicians dedicated to helping patients and raising awareness for this disabling condition. The future of #CSFleak care in Canada is bright!

Visit beautiful Amsterdam, the Netherlands 🇳🇱, in 4 weeks to participate in the 2-day Intracranial Hypotension conference bit.ly/3Z86Sin hosted by @CedarsSinai @DukeU @FreiburgUni @UvA_Amsterdam sponsored by @spinalCSFleak
On my way to Toronto now! See you there!
🌟 Thank You to Our Sponsors! 🌟 A big thank you to our generous sponsors for making the 2nd Canadian SIH Conference possible. We’re excited to welcome everyone tomorrow — and it’s not too late to register for the online format: spinalcsfleakcanada.ca/registration-c…
Our annual fundraising drive, duradash®, is happening now! We are a small, patient-led nonprofit with a big mission. Please consider a tax-deductible donation in support of our work, or help share our campaign page to spread the word: bit.ly/duradash25
🌟 Thank You to Our Sponsors! 🌟 A big thank you to our generous sponsors for making the 2nd Canadian SIH Conference possible. We’re excited to welcome everyone tomorrow — and it’s not too late to register for the online format: spinalcsfleakcanada.ca/registration-c…
🔊Just 5 Days to Go! We’re counting down the days to the 2nd Canadian SIH Conference, taking place May 31 – June 1, 2025! If you haven’t registered yet—there’s still time! spinalcsfleakcanada.ca/registration-c…
Another incredible spinal CSF leak session from TITANS of the field @AndrewCallenMD @WouterSchievink @PeterGKranz superlative talks & lessons - honour to host together this with expert @LeviChazen 🤩👏🏾great to see a big audience engaging more & more in this topic @TheASNR #ASNR25
#ASNR25 #COTD: Tuesday Spine Thx to Drs. Bhaumik, Petrucci & Callen NO SPOILERS!!! Give answers as GIFs ONLY. Answer tomorrow morning. #ASNR25 #Neuroradiology #FOAMed #RadRes #MedEd
📍Join us for a 1.5-day event dedicated to understanding and treating Spontaneous Intracranial Hypotension (#SIH). 🗓2nd Canadian SIH Conference | May 31 – June 1, 2025. >>Secure your spot today! spinalcsfleakcanada.ca/home-page-cana…
Looking forward to @Radiopaedia 2025 tomorrow! I’m talking about CNS lymphoma, but can’t wait to hear from @NeuroradLal & @Das_neurorad among many other great speakers - fantastic day of neuro & H&N content to kickstart the week, hope to see you there! 👉🏾radiopaedia.org/courses/radiop…
New multi- center study on outcomes of patching Type 2 #CSFLeaks in @TheAJNR out today! Check it out: ajnr.org/content/early/…
Excited to share our new research paper showing how decub CTM can identify the dural tear in extradural arachnoid cysts to aid in surgical repair. We also highlight several similarities with lateral CSF leaks & hint of a possible spectrum. @Niklas_Luetzen ajnr.org/content/early/…
Just published in @TheAJNR ! Type 1 (ventral) CSF leaks in patients with spontaneous intracranial hypotension are mostly high-flow leaks that appear on average within 1,5 sec on digital subtraction myelography. #CSF Center Freiburg @ZanderCharlotte @JrgenBeck @KathaDCwolf
Great #CSFLeak / #SIH session at #asnr2025 with my friends and role models @PeterGKranz and @WouterSchievink @TheASNR

Congratulations @NeuroradLal !!!
Congratulation to the 2025 AJNR Award Winners! #ASNR25
New #CSFLeak paper: "Histopathological Analysis of Five Patients with CSF-Venous Fistulas After Surgical Nerve Root Ligation and Resection" Congrats to @CUMedicalSchool medical student Andrew Mecum for doing an outstanding job leading this project! ajnr.org/content/early/…
"Technical Tips for CT-Guided Fibrin Glue Patching of CSF-Venous Fistulas" doi.org/10.3174/ajnr.A… @MarkMamloukMD @The_ASSR