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

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

The American Association of Neuropathologists will be represented at #USCAP2026, March 21-26, 2026, in San Antonio, Texas, through the following events. If you’re planning to attend, please join!

@NU_Pathology @DanielJBrat @NayarRitu @FeliPathMD @lucy_fu @bonnie_choy @NUFeinbergMed We are thrilled to welcome these truly remarkable individuals to the @NU_Pathology family! #PurplePath #Pathology #Match2026 🔬 @NorthwesternMed @NUFeinbergMed @McGawGME

Happy Match Day! We are so excited to welcome our new residents to Chicago💜 #PurplePath #PathMatch2026

Expert insight matters. By participating in the U.S. News & World Report Best Hospitals survey, you help guide patients to quality care. Please consider Northwestern Medicine-Northwestern Memorial Hospital for excellence in neurology and neurosurgery. Vote now: doximity.com

The differential for this malignant small round blue cell tumor is broad, including CNS embryonal neoplasms and poorly differentiated sarcomas. Representative IHCs are shown. What is the most likely diagnosis? What molecular finding(s) do you expect to be present in this tumor?

On #InternationalWomensDay, we recognize and celebrate the incredible women in our department and the impact they make every day #PurplePath

⭐️AANP Case of the Month⭐️ Credit: @JaredAhrendsen 5yo p/w large, variably enhancing frontal mass. There is no evidence of extracranial disease. Resection reveals histomorphology shown here. What is your differential diagnosis? Which IHC/stains would you order? #neuropath

We want YOU to join the @MatchToPath team! Join the growing community of pathologists helping build an internationally recognized, free platform for mentorship, advice, and webinars on applying to pathology. Deadline Match 3oth: forms.gle/cqQmVorCzFfPyb… #MatchToPath #Pathology

Thank you to the @McGawGME team for hosting a great PD Retreat this morning from @NU_Pathology team.

A huge thank you to everyone who participated in our Pathology Annual Research Retreat! Incredible research, great discussions, and congratulations to all of our abstract award winners 💜

@DanielJBrat @NU_Pathology @PJamshidi_MD @JaredAhrendsen So proud of our stellar @NU_Pathology Neuropathology group- outstanding diagnosticians and researchers who gave fabulous presentations this morning.

What's the diagnosis of this striking brain tumor? (If you're having trouble, maybe your friend MELanie can help. Or you can snack on some MELon while you're thinking about it.) #pathology #neuropath #pathtwitter

It was an honor to present at the pediatric #neuropathology workshop (@The_AAFS) with this group of fantastic pathologists! #neuropath #4n6 🧠🔬

#Dordaviprone may offer hope for patients with H3 K27M–mutant diffuse midline #glioma, one of the most challenging #BrainTumors to treat. Karan Dixit, MD, shares insights on this emerging therapy and its potential to improve outcomes for patients with limited treatment options in a two minute-overview. Read the full article: breakthroughsforphysicians.nm.org/neurosciences-…

A new DNA methylation–based classifier led by Pouya Jamshidi, MD, predicts meningioma recurrence with 96% accuracy. Validated on 217 samples, it offers a powerful molecular tool to improve diagnosis and guide patient management. pubmed.ncbi.nlm.nih.gov/41466325

Waking from a hiatus to announce the - the high intensity Chicago Pathology Board Review Series; Registration Open - 7 th year in a row: @AmeetRKini" target="_blank" rel="nofollow noopener">chicago.medicine.uic.edu/pathology/news… @kalishahillmd @KMirza @smlungpathguy @JMGardnerMD @UICPathology @JaredAhrendsen @IHC_guy @DrSwatiBhardwaj

⭐️AANP Case of the Month⭐️ Credit: Dr. Purvi Patel, MD, PhD 66F p/w seizure. MRI: left frontal extra axial mass. Based on the images shown, what is your DDX? What stains would you order? Likely molecular alteration? #neuropath

I am thrilled to announce the launch of Rapid Fire Virtual Board Review 2026 with Ace My Path! This isn't your standard lecture series. We’re turning board review into a sport. It's Gamified. It's High-Yield. It's Fast-Paced. #pathology #pathx #pathtwitter 🧵👇

⭐️AANP Case of the Month⭐️ Credit: Dr. Dimitri Trembath, MD, PhD 52F p/w worsening HA, visual disturbance, and ataxia. MRI brain reveals an enhancing extra axial mass at the CP angle. Histology shown. DDX? Useful IHC? Likely molecular alterations? #neuropath

Out of only 50 recipients nationwide, one of our outstanding faculty in Pathology, Dr. Sam Weinberg, has been honored with the prestigious ASCI Young Physician-Scientist Award! Congratulations Dr. Weinberg!🥳