Corey Chang, MD, PhD

Attending GI/Liver Pathologist / Former Fellow @Northwell, PSTP AP Path Resident @CedarsSinai @JHU @Rutgers @NIH #GIPath #LiverPath #PathTwitter

[Corey Chang, MD, PhD @corey_phd]

@smlungpathguy Thank you!!

[Corey Chang, MD, PhD @corey_phd]

52 year old man duodenal biopsy

[Elizabeth Montgomery, MD @LizMontgomeryMD]

These samples are from a patient known to have Behcet disease. It is a vasculitis that can affect both small and large blood vessels, usually veins.

[Elizabeth Montgomery, MD @LizMontgomeryMD]

An example of crystal storing histiocytosis; the patient needs to be evaluated for a plasma cell disorder or other lambda-restricted B cell neoplasm.
Arnold CA, et al. Am J Surg Pathol. 2018 Oct;42(10):1317-1324. PMID: 29878935.

[Cincy Kids Pathology @CincyKidsPath]

Counting eos is not enough 🔍

15 eos/hpf supports EoE, but EoE-HSS captures true disease activity by scoring 8 histologic features.
See for yourself: https://t.co/ddWGHC6M6L
#PediPath #GIpath #EoE #MedEd

[Elizabeth Montgomery, MD @LizMontgomeryMD]

This lesion arose in the small intestine, resulting in obstruction. It probably was related to non-steroidal anti-inflammatory drugs.
Cortina G, et al. PMID: 10555011.

[Adriana Zucchiatti @zucchiatti_]

Liver Biopsy Features May Help Distinguish
Drug-Induced Autoimmune-Like Hepatitis From
Idiopathic Autoimmune Hepatitis
https://t.co/8wo067bU9U
#liverpath

[Pancreatobiliary Pathology Society @pbpath]

New kid on the block, sagittal method of grossing Whipple resections. Duct centric lesions are better defined by this method @OlcaBasturk

[Elizabeth Montgomery, MD @LizMontgomeryMD]

This gastric body biopsy shows severe destructive gastropathy - the parietal cells are gone! It is too inflamed for autoimmune gastritis/pernicious anemia. Apoptotic bodies, usually scarce in the stomach, are indicated. This was a result of pembrolizumab immunotherapy.

[the New York Pathological Society @NYPathSociety]

Join us for our first virtual event of the new year!

Register here: https://t.co/S5wrQJia4A

[the New York Pathological Society @NYPathSociety]

We're one week away from the Fall Mini-Symposium & Social Networking Event! Join us on November 21st, 2025 at Weill Cornell Medicine. Dinner will be served! See registration link below:

https://t.co/bp7KiUwx4t

[the New York Pathological Society @NYPathSociety]

Registration is now open for the upcoming Fall Mini-Symposium & Social Networking Event! Join us on November 21st, 2025 at Weill Cornell Medicine. Dinner will be served! See registration link below:

https://t.co/bp7KiUvZeV

[the New York Pathological Society @NYPathSociety]

We are less than a month away from our annual Fall Mini-Symposium & Social Networking Event! Join us on November 21st, 2025 at Weill Cornell Medicine.

Registration link and details coming soon.

[Elizabeth Montgomery, MD @LizMontgomeryMD]

This atypical lipomatous tumor (well-differentiated liposarcoma) is unusual in containing plentiful lipoblasts.

[Tim Bracey @drtimbracey]

Appendicitis with an incidental serrated epithelial proliferation. The preferred terminology is "serrated polyp" rather than SSL as they have different genetics to their colonic counterparts. NB this is not LAMN as the muscularis mucosae is intact @Pathoutlines @RaulSGonzalezMD

[Elizabeth Montgomery, MD @LizMontgomeryMD]

This week, I learned not only that gangliocytic paragangliomas were reclassified by the WHO as composite gangliocytoma/neuroma and neuroendocrine tumor (CoGNET) - thank you Rhonda Yantiss - but also that they can express CD117/KIT to result in wrong diagnoses on small biopsies.

[Elizabeth Montgomery, MD @LizMontgomeryMD]

These small intestinal biopsies from a patient with markedly elevated serum IgM from a splenic plasmacytoid extranodal marginal zone (mucosa-associated lymphoid tissue) lymphoma show dramatic edema and IgM deposition that resulted in malabsorption. There is no lymphoma.

[Elizabeth Montgomery, MD @LizMontgomeryMD]

Esophageal biopsy showing sebaceous heterotopia for a Wednesday! #UMiamiPath

[the New York Pathological Society @NYPathSociety]

Join us at our next virtual event!

Register here: https://t.co/a5314KVpJN

[Elizabeth Montgomery, MD @LizMontgomeryMD]

Unusual case - Colonic glomus tumor !