Dermatopathologist, Surgical pathologist AP/CP @MountSinaiMiami Dermpath @UPMC
Joined January 2019
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Quick overview of the common and "not so" common primary cutaneous T+B cell lymphomas.
#dermpath #cutaneouslymphoma
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Kei Shing Oh,MD retweeted
#diagnosis? Solitary Verrucous Plaque on the Right Pretibial Region jamanetwork.com/journals/jam… #dermpath #dermatology #pathology
Kei Shing Oh,MD retweeted
Lung adenocarcinoma, 1-5% may harbor ALK mutation, mainly EML4 fusion on chromosome 2. ALK IHC is FDA approved as a stand alone test, poorly diff adenocarcinoma with signet ring cells and plasmacytoid features, intracytoplasmic PMN, cytopathology #168 #CytoPro
Kei Shing Oh,MD retweeted
ALK-positive lung adenocarcinoma: The immunostain is ultrasensitive ALK (D5F3) kikoxp.com/posts/18954
Kei Shing Oh,MD retweeted
IMO, this cell would be unusual for a reactive lymph.
Downey Type II reactive lymphs are not this large and have moderately clumped chromatin (not blast-like).
The largest reactive lymphs (immunoblasts, Downey Type III) have coarse chromatin and basophilic cytoplasm.
Learning Points:
1. Mixed desmoplastic melanoma can result in pure spindle cell lymph node metastasis
2. Do SOX10 on lymph node to catch these sneaky mets!
onlinelibrary.wiley.com/doi/…
Kei Shing Oh,MD retweeted
Brunner Paste
brunner glands crushed from biopsy
occurs anywhere in duodenum in LP, submucosa, or crypts
vacuolated, foamy, PAS+
+/- continuity with intact glands
-IHC for Whipple antigen and S100 (NOT NEEDED!)
📝t.ly/puZfV
✅artifact
ALT Continuity with intact glands
ALT Paste in the crypts
ALT Duodenal biopsy specimen that was interpreted as spindle cell tumor, but turned out to be Brunner gland paste (PAS-positive) Gonzalez RS. A Brief Examination of “Brunner Gland Paste.” International Journal of Surgical Pathology. 2017;25(3):287-288. doi:10.1177/1066896916678927
ALT Duodenal biopsy specimen that was interpreted as spindle cell tumor, but turned out to be Brunner gland paste (PAS-positive) Gonzalez RS. A Brief Examination of “Brunner Gland Paste.” International Journal of Surgical Pathology. 2017;25(3):287-288. doi:10.1177/1066896916678927
Kei Shing Oh,MD retweeted
I finished my notes on Melanocytic tumors for my teaching website, "Kurt's Notes" (kurtsnotes.net/).
🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬🔬
Full notes available here: schaberg.faculty.ucdavis.edu…
Kei Shing Oh,MD retweeted
DAPA Grand Rounds on Monday, April 24, 11 am EST will be presented by no other than the illustrious Dr. Montgomery. "Some Lower Gastrointestinal Mimickers". To preview the cases: umiami.pathpresenter.net/pub…
Trainees: Register here for free membership of DPA: digitalpathologyassociation.…
Kei Shing Oh,MD retweeted
31-year old female Pap Cervical Smear.
Normal squamous cells vs Atypical squamous cells #pathology #cytology
Kei Shing Oh,MD retweeted
Fine needle aspiration of a salivary gland revealing abundant crystalloid structures. What type of crystal is seen? Answer: buff.ly/3xcPvPr #PathTwitter #CytoPath #MedTwitter #Cytology #PathArt
Kei Shing Oh,MD retweeted
Part 1:
How does basic understanding of normal histology help in the diagnosis of cutaneous tumors with follicular differentiation? Part 1 to describe normal histology of hair follicle followed by tumors with corresponding type of differentiation.
#BasicFactsForResidents
Kei Shing Oh,MD retweeted
Check it out, Path folks!
WHO Head & Neck updates by Dr.@HeadandNeckPath for free on 3/27/23.
Kei Shing Oh,MD retweeted
BEST example EVER of ultra-rare disease! Elderly man, hx of lymphoma, leg mass arose weeks after he cut leg on wood in garden. GMS stain.
WSI: kikoxp.com/posts/5159.
Answer: kikoxp.com/posts/5155.
#pathology #pathologists #pathTwitter #dermpath #dermatology #dermtwitter
How to advance your diagnostic skills "virtually"? here's a gem for you.. meridian.allenpress.com/aplm…
@dpatweet #PathTwitter #MedEd #digitalpathology
