Rob Humble, MD

Shoutout to Drs. Julianne Szczepanski and Annette Kim for their recent article on donor-derived cell-free DNA in solid organ transplantation, featured in the @Pathologists! The article provides a practical and forward-looking overview of dd-cfDNA technologies and highlights how these tools are transforming kidney and heart transplant surveillance. Read more: michmed.org/VdVk3

I am excited to announce our next @ISIMMweb webinar scheduled for Wednesday, Feb 18 at 11 am ET. My longtime friend and ISIMM Board member Hadi Yaziji (@MdYaziji) will present "Practical Technical Tools in Diagnostic IHC and ISH." Register here: us02web.zoom.us/webinar/regist…

#GUpath TURBT: urothelial carcinoma with giant cell subtype 🔬uncommon uro ca "variant" composed of bizarre pleomorphic tumor giant cells ✔️aggressive behavior 👀DDx: uro ca with osteoclastic-like giant cells, uro ca with trophoblastic diff ⏬cont'd

Today, we honor the life of Regina Ferguson, our beloved Facilities Manager in #UMichPath. Regina was a leader, problem-solver, and friend to all. Her kindness and dedication made our department better every day. She will be deeply missed and forever remembered. michmed.org/WX5Jd

#GUpath nephrectomy: tubulocystic RCC

Happening now! 👀🔬

We are thrilled to present to our readers the 20th Anniversary Annual Review Issue of Histopathology @Histo_Journal @daniel_berney When the inaugural issue was published in 2006, Dr. Christopher Fletcher articulated a clear vision for this series - “update general pathologists in areas in which newly emerging data have appeared, or in which there has been conceptual evolution, ongoing controversy, or persistent ambiguity (e.g. grading).” Two decades later, this vision remains as relevant and impactful as ever, continuing to guide the mission of our journey.   The 2026 Annual Review Issue showcases a comprehensive and contemporary spectrum of urologic diseases, encompassing the prostate, bladder, kidney, testis, penis, and adrenal gland, while also embracing emerging frontiers such as artificial intelligence and liquid biopsy in urologic surgical pathology. These 21 state-of-the-art reviews reflect both the depth and dynamism of the field. We hope readers will find the articles authoritative, insightful, and practical, offering clear guidance amid rapidly evolving diagnostic, molecular, and technological advances.   As we commemorate this 20-year milestone, we extend our deepest gratitude to all contributing authors for their outstanding scholarship, dedication, and timely contributions. Their collective expertise provides a rich and authoritative synthesis of diagnostic and molecular advances in the era of precision medicine. It is our hope that this anniversary issue will serve not only as a valuable resource for clinical practice, education, and translational research, but also as an inspiration for continued innovation and collaboration in urologic surgical pathology for years to come.   This 2026 special edition also holds personal significance for me, as it marks my third time serving as co-editor of the Histopathology Annual Review Issue, alongside my dear friend and esteemed colleague, Dr. Dan Berney, following my co-editor role in the 2012 and 2019 Annual Review Issues.   The full content of this special anniversary issue is freely available at: onlinelibrary.wiley.com/toc/13652559/2… Annual Review Issue: Genitourinary Pathology: Histopathology: Vol 88, No 1 @rajalbshah @GladellPaner @Williamson_SR @katcollmd @MuraliV72899596 @AlessiaCim @TheoKwast @h_alahmadie @DrShariat @AkgulMD @slusagar @KhaleelAlObaidy @Andres_M_Acosta @Shounak_Gupta @FionaMacPath @UrogerliMD @Aparwani_dpath @GU_Path_Society @IntSocUropath #gupath #pathology #pathtwitter #surgpath

I'm thrilled to announce our next @ISIMMweb webinar scheduled for Wednesday, Jan 14 at 11 am ET. My IHC Big Brother, Jeff Goldsmith, is presenting "Analytic Validation of Clinical Immunohistochemistry Assays: Past, Present, and Future." Register here: us02web.zoom.us/webinar/regist…

📢 Unexpected Opening: 2026–27 Genitourinary Pathology Fellowship at #UMichPath ✔️ One-year fellowship ✔️ Hands-on GU pathology service ✔️ Specialized Program of Research Excellence (SPORE) in prostate cancer ✔️ Interdisciplinary training for academic careers Apply today! ➡️michmed.org/dYXb4

We @UMichPath are looking for a pathologist colleague to join our group as a #gupath fellow- if you have a passion for #genitourinary #pathology , we want to hear from you (please DM or email me directly) @GU_Path_Society #uscap #pathresidents @TheUSCAP @Pathologists @KMirza

Nephrectomy specimen revealing small cuboidal cells are seen arranged in a single layer around papillary cores containing foamy macrophages. What tumor is this? Answer: buff.ly/3GyQZYt #PathArt #PathTwitter #Cytopath #Pathology

On call for Christmas.🎄🔬📟〽️

@drmehrarohit @AJCPjournal @GU_Path_Society @IntSocUropath @RobHumbleMD @PCFnews @UMRogelCancer @MLabsUM @UMichPath @rahulmannan @samsimsal @wandering_gu @PavlosMsaouel @rovingatuscap @h_alahmadie @DrVaishampayan @GUpathMenon @UMichUrology Congrats @RobHumbleMD @drmehrarohit & team for showing 👉 ERG FISH is a useful diagnostic tool for confirming prostate origin in undifferentiated tumors and informing appropriate clinical management. @AJCPjournal

Check out our new study @AJCPjournal highlighting utility of clinical ERG FISH testing in advanced & transdifferentiated #prostatecancer doi.org/10.1093/ajcp/a… @GU_Path_Society @IntSocUropath @RobHumbleMD @PCFnews @UMRogelCancer @MLabsUM @UMichPath

Join us Dec 22 (12–1:30 PM EST) for the next GUPS Virtual Education Session on Urothelial carcinoma – histologic subtypes & molecular pathology Speakers: Dr. Tretiakova, Dr. Iyer, Dr. Meeks Moderators: Dr. Brimo Dr. Al-Ahmadie, Dr. Mehra Register here: us02web.zoom.us/webinar/regist…

Honored to co-author this review with my mentor and friend @LiangChengMD on post-treatment prostate pathology: what was, what is, what’s next @Histo_Journal #gupath #openaccess 🔗 onlinelibrary.wiley.com/doi/10.1111/hi…

Please join us this Wednesday, December 17 at 11 ET for this month's @ISIMMweb webinar. @nicolecipriani will present an "IHC Approach to Salivary Gland Tumors." Register here: us02web.zoom.us/webinar/regist…

Congratulations, Dr. Chinnaiyan!

💥Diagnostic Pitfall Alert 💥 ➡️Diffuse CA9 expression in ~20% of FH-deficient RCCs ➡️Pitfall likely greater in metastatic lesions vs primary renal tumor #gupath #GUpathrocks 🔬 Baniak N et al, Histopathol 2020 - PMID: 32639054 Pacheo RR et al, IJSP 2024 - PMID: 37050851

Happening now! #IHCpath