Thor Halfdanarson

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@OncoThor

🇮🇸Medical Oncologist/Educator, NET/GI/CUP enthusiast. Husband/dadx4 (bad dad jokes). Cyclist. Avant gardener. Professor of Oncology, Mayo Clinic. Tweets mine.

Rochester, Minnesota mayoclinic.org/biographies/ha… Joined December 2016

2.4K Following 5.9K Followers 4.1K Posts

Latest posts 5

Thor Halfdanarson @OncoThor 2d

The NANETS highlights for me are always the trainees presenting their work at the poster board and sometimes the podium. Excellent work by a future colleague, @PomerantzLauren on thymic and bronchial NETs in patients with MEN1. It truly is a privilege to work with such talented colleagues. The future is bright!

@PatrickMcGarrah @OmairShariq @sonbol_bassam @KLeventakos

Thor Halfdanarson @OncoThor 2d

Post-NANETS gravel ride in Minnesota. Delicious weather and still some corn unharvested. Not many days like this left in 2026, at least not in Minnesota…

Thor Halfdanarson @OncoThor 3d

Agree 100%.

Udhayvir Grewal Verified account @UGrewalMD 3d

Dr Howe is a legend and a trailblazer. It’s my life’s greatest honour that not only does he know who I am, I got to (and continue to) work alongside him. Eternally grateful to Dr Howe for all that I learnt from him. What a richly deserved honor. @UIowaCancer
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Thor Halfdanarson @OncoThor 3d

This was incredibly well deserved, @UGrewalMD and also utterly unsurprising… 😉 Congratulations!!!🎉🎊

I can rest assured that the future of NEN research is in good hands…

Udhayvir Grewal Verified account @UGrewalMD 3d

Thanks @ChandrikhaC
Thanks for taking me under your wing as a first year fellow and showing me the path. I wouldn’t be here without your support. I hope I can continue making you proud.

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Thor Halfdanarson @OncoThor 4d

I use the Rising Star definition sparingly but today, it is so appropriate. Amazing accomplishments, not just in NENs but in GI oncology in general. Congratulations, @sonbol_bassam !!!

Lisa Yen @lisayentwin 4d

#NANETS2026 - Congrats @sonbol_bassam! You are truly a Rising Star! 🌟
@NANETS1 @NCFCancer @CarcinoidNETs @OncoThor

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