MD. Multi-organ abdominal transplant, HPB, and Onc. Tweets are my own and not endorsed by my employer.

Joined May 2009
146 Photos and videos
Ryan William Day, MD retweeted
The liver isn’t just passive “soil” for cancer spread – it’s an active partner. Understanding its immune-tolerant environment could unlock new therapies for colorectal cancer metastases, says @Maker_MD of @UCSFCancer and @UCSFSurgery. #Oncology #DDW2026 #LiverTwitter
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Ryan William Day, MD retweeted
We have 2 BMT docs in the whole state of Nevada. I’ll sleep when I’m dead.
To guarantee a rested neurosurgeon is always immediately available at 2am, you are not asking for one extra doctor. You are asking for a whole coverage model where post call relief is structurally guaranteed. That generally takes something like 6 to 8 neurosurgeons per center, not 2 or 3. Scale that expectation across the country and you are quickly talking about a multiple of the current workforce, not a small tweak. That is not achievable by simply expanding residency slots without breaking the training model. A competent neurosurgeon requires years of supervised decision making plus a very large operative experience across a wide breadth of pathology and acuity. You cannot train that safely at low volume hospitals. Training capacity is constrained by case volume, ICU infrastructure, OR teams, and faculty bandwidth. Even if you pushed expansion aggressively, you might squeeze out an extra few dozen new neurosurgeons per year. Helpful but not enough to staff every hospital with guaranteed rest coverage. Extending careers and reducing early burnout could also help at the margin, but it does not meaningfully move the needle. You could also open the doors to every foreign trained neurosurgeon overnight. That would improve headcount, but you still run into the hard part: verifying training quality, ensuring competence across the full emergency spectrum, credentialing, malpractice, and integrating people into systems that can actually support high acuity neurosurgery. And cost matters. If you want more specialists to take more call for longer careers, you have to pay for it and you have to build the supporting teams. Otherwise the same people will keep burning out or leaving for industry and non clinical work. You simply cannot have all three at once: -Near instant local access everywhere -Always rested subspecialists -High quality maintained by adequate volume and experienced teams Pick two, maybe. True neurosurgical emergencies are relatively uncommon but catastrophic when they occur. That forces regionalization. Regionalization concentrates call. Concentrated call produces fatigue unless you have large groups and real relief. Large groups require volume, infrastructure, and money. There are no solutions, only tradeoffs.
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Ryan William Day, MD retweeted
WORTH THE WATCH: his name is Azeem Banatwalla and this is one of the most creative and hilarious comedy bits you will ever hear. someone's definitely going to try and replicate it. 😭
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Ryan William Day, MD retweeted
Surgery is a "wicked" environment: feedback is delayed, noisy, and often biased. My essay on why experience doesn't always equal mastery, and how to learn when the feedback loops are broken. leezhaomd.org/post/the-wicke… #MedTwitter #Surgery #MedEd
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The story of the first HALT (heart after liver transplant) at AdvrntHealth Orlando. This innovative procedure for heart transplant recipients with high levels of antibodies allows for transplants in patients who may have never found compatible matches b4. adventhealth.com/news/innova…
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Ryan William Day, MD retweeted
#ScienceSaturday ❓ Why do T cells sometimes fail to fight cancer? ➡️ A new study in Nature shows that when T cells are exposed to cancer or long-term infections, they can enter a state called exhaustion, where they lose their ability to eliminate harmful cells. ➡️ The researchers found that exhausted T cells develop a special type of stress response. Instead of reducing protein production, these cells increase it, leading to protein buildup and overworked “chaperone” proteins. This stress weakens the T cells and helps tumors evade the immune system. ➡️ By blocking certain stress-related proteins, the scientists were able to restore T cell activity and improve the effectiveness of cancer immunotherapy in preclinical models. 🌟 Congratulations to my good friend and senior author Zihai Li of The Ohio State University Comprehensive Cancer Center and collaborators at Johns Hopkins, Emory, Uppsala University and others for advancing this important research. @Zihai @OhioState @HopkinsMedicine @EmoryUniversity 🔗 Read more: doi.org/10.1038/s41586-025-0…
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Please make a donation to the Sean Cleary fund with the @AHPBA Foundation. A worthy cause and one he supported throughout his life. web.cvent.com/event/7b713ed5…

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Ryan William Day, MD retweeted
🌟Exciting ‼️@UCSF Transplant Surgeon Dr. Shareef Syed has been selected as an Associate Member of the @AmCollSurgeons Academy of Master Surgeon Educators. This Fall, he'll be officially inducted into the academy in Chicago. Congratulations, Dr. Syed🏅
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Ryan William Day, MD retweeted
30 Jun 2025
A new resident just had their moving truck stolen with all their belongings. It's a tough time for them, and they need our help. Please consider donating or sharing to support their fresh start. gofund.me/85510c99

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Ryan William Day, MD retweeted
18 May 2025
Fantastic panel discussing new approaches to GI/Liver/ Pancreatic tumors. Honored to be invited keynote by @AdventHealthCFL and to reconnect with colleagues. Amazing hosts. Inspired to collaborate and learn more together. @ryanwday @ruthhe12 @arosales80 @UCSFSurgery @UCSFCancer
Replying to @Maker_MD
@Maker_MD delivers passionate surgical keynote on "Too Many Pancreatic Cysts, Too Few Answers" for us @AdventHealthCFL @drzakoncology
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Ryan William Day, MD retweeted
2025 NATIONAL CHAMPIONS!!!!!!!!!!!!!!!!!!!!
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Go Gators!🐊 🏆
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Ryan William Day, MD retweeted
26 Mar 2025
We are deeply saddened by the passing of David Sutherland, MD, PhD, a pioneer in transplantation and former ASTS President (1990-91). His groundbreaking work in pancreas & islet transplantation transformed the field, and his legacy lives on through his research, mentorship, and innovations. Our heartfelt condolences to his family, colleagues, and all who knew him. Watch his 2018 ASTS Chimera Chronicles interview: bit.ly/41MK6zl
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Ryan William Day, MD retweeted
I have terrible, disturbing, infuriating news. Wonton was adopted on Thursday to what seemed like a great home. She left as a healthy, perfect, playful kitten. Friday morning, just 20 hrs later, she was returned to me broken, bleeding, in critical condition.
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Ryan William Day, MD retweeted
Our DoS had 9 faculty awarded @MayoClinicSOM Teaching Excellence Award. The award recognizes faculty with a 100% nomination rate & evaluations. Congrats to Dr Young-Fadok, Dr Beamer, @NitinMi59125565, @ZhiVenFongMD, @david_etzioni, Dr Nelson, Dr Pearson, Dr Pockaj & @wmstone12!
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Ryan William Day, MD retweeted
4 Mar 2025
Congrats to Dr. Babak Orandi, MD, PhD, MSc – a true Rising Star in Transplantation! As a skilled surgeon & founding director of the POWER Clinic, he's breaking barriers to organ transplant and living donation for his patients. Learn more about his work on our website: bit.ly/3CmWFra
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