Jared T. Ahrendsen MD, PhD (AP/NP/FP)

Neuropathologist, Residency Program Director @NU_Pathology | Assistant Professor of #Pathology @NUFeinbergMed | #neuropath 🧠🔬

[Jared T. Ahrendsen MD, PhD (AP/NP/FP) @JaredAhrendsen]

Neuroautopsy from a pt with disseminated coccidiomycosis. Prominent leptomeningeal inflammation with focal breakthrough into underlying parenchyma = meningoencephalitis. Beautiful yet scary spherules filled with endospores are clearly visible on H&E/LFB. #neuropath #forensicpath

[Laura J. Tafe, MD @LJTafeMD]

The pathology trope - “a cultural narrative that is actively undermining the diagnostic infrastructure of modern medicine.”

Highly recommended this read.

From Dr. @menona1994 in @AcadPathol

https://t.co/PVWpnaInVE

[Pouya Jamshidi, MD, MS-HPE @PJamshidi_MD]

It was a real pleasure presenting Grand Rounds at @DukePathDept! Grateful for the invitation @BrainIsThePath and the engaging discussion with colleagues. @NU_Pathology @BrainTumorInst @LurieCancer

[AANP @neuropathology]

⭐️AANP Case of the Month⭐️
Credit: @DimitriTrembath
55F w/dural mass. Histology and copy number plot shown. DDX? WHO grade based on histology? What does the CNV plot suggest about this tumor’s behavior and grade? What IHC can serve as a surrogate for the key molecular finding?

[Northwestern Pathology @NU_Pathology]

It’s New Faculty Friday! Meet Dr. Steven Smith! Originally from Jamaica, Dr. Smith enjoys Northwestern Pathology’s collaborative environment and working alongside faculty and trainees dedicated to education. Outside of work, he’s an avid jazz fan and photographer! 📸 #PurplePath

[Malnati Brain Tumor Institute at Northwestern @BrainTumorInst]

Published in Nature Communications, new research from Northwestern Medicine identifies MAPK/ERK signaling as a key regulator of glioblastoma immunotherapy response.

Read more: https://t.co/L225ONI6E3

[Northwestern Pathology @NU_Pathology]

Interested in a residency at Northwestern Pathology? Join our current residents for a Q&A on Wednesday, September 23, from 4-5pm CT. Register here: https://t.co/CsxHH2kzfi

[Virtual Pathology Student Interest Group @Path_SIG]

#pathmatch27 Residency Open House events for this week! 🔬🤩

Make sure to visit https://t.co/2URH69muUU for more information on how to register and attend!

[Northwestern Pathology @NU_Pathology]

Our next PGY-1 highlight is Alex Petts! Alex recently earned his MD from the University of Oklahoma College of Medicine. Since moving to Chicago, he’s been loving the city’s food scene and trying out new spots! Welcome Alex! #PurplePath #ResidentHighlight

[Jared T. Ahrendsen MD, PhD (AP/NP/FP) @JaredAhrendsen]

Don’t forget to register for this unique opportunity to hear from @NU_Pathology leadership about our fantastic residency program. Just one week away! #PathMatch27

[Northwestern Pathology @NU_Pathology]

Interested in a residency at Northwestern Pathology? Join Chairman @DanielJBrat and Residency Program Leadership for a Q&A on Wednesday, September 16, 2026 from 10 to 11:30am CT. Register here: https://t.co/NPLMIQ7BF2

[Peter Kobalka @PeterKobalka]

Angiocentric glioma, WHO grade 1. Note the impressive number of bipolar spindle cells concentrated around vessels. A MYB::QKI fusion was detected. #Neuropath #Neuropathology #CNSpathology #Pathtwitter #PathX

[Ritu Nayar, MD @NayarRitu]

We look forward to meeting many future pathologists at our open house. Its a wonderful and exciting time to learn and practice pathology! @NU_MedEd @NUFeinbergMed @NU_Pathology

[Northwestern Pathology @NU_Pathology]

Interested in a residency at Northwestern Pathology? Join Chairman @DanielJBrat and Residency Program Leadership for a Q&A on Wednesday, September 16, 2026 from 10 to 11:30am CT. Register here: https://t.co/NPLMIQ7BF2

[NAME @theNAME1966]

Case of the Week: A 48-year-old experienced SCUBA diver dies after an underwater incident. Autopsy revealed petechiae, facial injuries, crepitant skin, and the findings showed in the photos. Which investigation is most diagnostically valuable? https://t.co/Bdpflo9Eg3

[Northwestern Pathology @NU_Pathology]

The latest edition of Northwestern Pathology’s newsletter, The Scope, can be viewed here: https://t.co/87ep72T4KZ

[Northwestern Pathology @NU_Pathology]

Meet PGY-1 Tommy Gruchała! Tommy recently earned his MD from @nufeinbergmed and is excited to continue his training here in pathology. Welcome Tommy!💜 #PurplePath #ResidentHighlight

[AANP @neuropathology]

⭐️AANP Case of the Month⭐️
Credit: Drs. @PeterKobalka & Krishna Bharani @OhioStatePath
30M w/insidious ataxia and HAs. MRI (shown) with a large, enhancing cerebellar mass. Histology shown. DDX? Which immunostains would help resolve the DDX?

[Jared T. Ahrendsen MD, PhD (AP/NP/FP) @JaredAhrendsen]

This is classic #histology of Pilocytic Astrocytoma, with fine fibrillary “hair-like” processes and numerous eosinophilic Rosenthal fibers. In the cerebellum, these tumors usually harbor the KIAA1549::BRAF fusion, resulting from a duplication event on chromosome 7q34.

[Jared T. Ahrendsen MD, PhD (AP/NP/FP) @JaredAhrendsen]

#PathClassic - cerebellar tumor from a young person. #Diagnosis? Most likely molecular alteration? What are those eosinophilic structures called? 🧐
#neuropath 🧠🔬

[AANP @neuropathology]

Really excited for tomorrow’s AANP Teaching Rounds!
“What Do Neuropathologists Need to Know About Ophthalmology?” 👁️🧠
Featuring Natalie Wolkow, MD, PhD (Mass Eye and Ear / Harvard). Don’t miss it! 🔬✨
https://t.co/onYoIAVK9N
#Neuropathology #Ophthalmology #pathx #neuropath

[Northwestern Pathology @NU_Pathology]

On Friday, our department celebrated our graduating residents and fellows. Congratulations to all of our graduates! We are proud of your accomplishments and wish you all the best in this next chapter💜 #PurplePath