Trained in dermatology and pathology. Now sharing knowledge online on melanocytic pathology. Old-school geek. Tweets are mine not medical advice.

Lyon, France
Joined March 2012
Arnaud de la Fouchardiere MD, PhD retweeted
Our MET-fusion Spitz tumour series is out in Pathology! 17 cases, 3 recurring histologic patterns, and a distinctive TRIM4::MET-associated phenotype. Thanks to @SimonRoyMD, @melanopath, and all our collaborators! doi.org/10.1016/j.pathol.202… #Dermpath
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Arnaud de la Fouchardiere MD, PhD retweeted
Snapshots from #IAP2026 in Fukuoka! 📸 2,000 pathologists from 90 countries, four days of science and connection. Thank you to everyone who joined us, and to our gracious Japanese hosts for an unforgettable Congress. 🌏 #Pathology
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Arnaud de la Fouchardiere MD, PhD retweeted
You know you're a pathologist when planning a vacation isn't relaxing because you're just dreading the workload waiting for you.
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Arnaud de la Fouchardiere MD, PhD retweeted
When I was a newly-wed, I woke up my wife one night, talking in my sleep. She told me I said, "That's a macrophage!"
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Arnaud de la Fouchardiere MD, PhD retweeted
REMINDER❗ Dermpedia Consults ❗Tomorrow at 3PM with Dr. Christine Ko, MD - mailchi.mp/dermpedia.org/joi…
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Arnaud de la Fouchardiere MD, PhD retweeted
Practical tips for starting a biomedical research lab! Group effort with Irving Cancer Immunology Symposium attendees, co-led with @amycfanphd. Thanks Nir for bringing us together.
Roy et al. posit that scientific independence alone is insufficient to build a sustainable lab under uncertain funding & offer practical guidance for defining a research vision, allocating resources, navigating funding opportunities & supporting trainees hubs.la/Q04zV5DW0
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Arnaud de la Fouchardiere MD, PhD retweeted
1 DAY TO GO!!! Don't miss our next Pathology Ground Round with Dr Sarah Aitken tomorrow🔬 Genomic Pathology: from DNA mutations to cancer evolution 🧬 🚨Register here: us06web.zoom.us/webinar/regi…
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Arnaud de la Fouchardiere MD, PhD retweeted
Happy to share that our article is hot off the press! 🥳 This is my first publication as a pathology resident, and hopefully the first of many! #PediPath #GUPath
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Arnaud de la Fouchardiere MD, PhD retweeted
Let’s make a series 😂 You know you’re a pathologist when you try to equate every lesion with food 😛
You know you're a pathologist if you take something no one agrees on and then try to quantify it
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Arnaud de la Fouchardiere MD, PhD retweeted
Exploring the intersection of clinical oncology, structural imaging and digital pathology Sixtus Onyima, MBBS, MSc Candidate in Systems Biology at Vilnius University in Lithuania, is investigating how advanced microscopy techniques can improve our understanding of liver cancer. His research examines collagen fiber orientation as a potential prognostic biomarker, with a focus on how computational tools can enhance diagnostic accuracy and expand access to specialized expertise. Originally from Nigeria, Sixtus brings a global perspective and a commitment to making scientific innovation more accessible in resource-limited healthcare settings. We’re proud to welcome Sixtus to #PathVisions26 as a Travel Award recipient! See more: bit.ly/4yNnIUf
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Arnaud de la Fouchardiere MD, PhD retweeted
De l’intérêt du suivi en dermoscopie. 6 mois entre ces deux photos mais a l’œil nu, on notait 0 différence .
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Arnaud de la Fouchardiere MD, PhD retweeted
Dedifferentiated and undifferentiated melanomas remain underrecognized with significant treatment implications - @aubre_gilbert shows that PD-L1 can provide a useful diagnostic hint (not just a predictive marker!). @StanfordPath @JHUPath
New in #HumPathol: Sarcomatoid malignancies with strong PD-L1 expression often represent dedifferentiated or undifferentiated melanomas. sciencedirect.com/science/ar… #pathology #PathTwitter #PathX #BSTpath
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Arnaud de la Fouchardiere MD, PhD retweeted
Today is the 205th birthday of Rudolf Ludwig Karl Virchow , the father of Modern Pathology. Celebrate this important date. Pathology is the link between science and medicine. 🔬 #iamapathologist
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Arnaud de la Fouchardiere MD, PhD retweeted
Thank you to the Japanese Society of Pathology for organizing a great IAP 2026 meeting in Fukuoka, Japan! Looking forward to hosting the 2028 IAP in Toronto, Canada. @IAPCentral
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Arnaud de la Fouchardiere MD, PhD retweeted
Replying to @melanopath
Uf! That is a great breakfast, dear Arnaud. Has the meeting ended? Hugs from Guayaquil.
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Arnaud de la Fouchardiere MD, PhD retweeted
Replying to @teyuka_344
先生も参加して下さってありがとうございました!
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Arnaud de la Fouchardiere MD, PhD retweeted
日英オフ会が開催されました! 参加者11名!しかしX民は少なく… Japan - UK pathologist dinner ✅ Thank you so much for organising @path0land #IAP2026
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Arnaud de la Fouchardiere MD, PhD retweeted
We are honored to host our 49 bursary recipients at IAP 2026! These well-deserving pathologists have traveled from far and wide to present their research in Fukuoka, and we are pleased to support them in their work and career development. #IAP2026 #Pathology
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