@Hemepathguy

The real, former @DennisOMalleyMD. Opinions are NOW my own. Hematopathologist, #lymphoma, #heme, #spleen, guitar

[@Hemepathguy @hemepathguy]

@RazaHoda O'Malley DP, Cherry DA, Burack WR. More Than Skin Deep: Histopathologic Assessment of Tattoo Ink Deposition in Lymph Nodes. Int J Surg Pathol. 2026 Mar 31:10668969261435590. doi: 10.1177/10668969261435590. Epub ahead of print. PMID: 41918289.

[@Hemepathguy @hemepathguy]

Hi. Hope all are well! FYI I will be giving a talk on Hodgkin lymphoma as part of the MD Anderson Virtual Hemepath lecture series. Tomorrow - Thursday May 28 at 7 AM Pacific/9 AM Eastern.
https://t.co/GF0LInp9n4

[@Hemepathguy @hemepathguy]

Hi All. Will be giving a glass slide lecture tomorrow AM the MD Anderson Virtual Heme series. A potpourri of cases emphasizing H&E morphology and distinct findings. Thursday 5/21 7 AM Pacific/10 AM Eastern https://t.co/LbHTbakUNV

[@Hemepathguy @hemepathguy]

Hi. Hope all are well! FYI I will be giving part 2 of my talk on benign lymph nodes as part of the MD Anderson Virtual Hemepath lecture series. Tomorrow - Thursday May 14 at 7 AM Pacific/9 AM Eastern. Link: https://t.co/E9lO6Aigzf

[@Hemepathguy @hemepathguy]

Will be giving a lecture on spleen pathology tomorrow as part of MD Anderson hemepath series.

4/23/26 Thursday. 7 AM Pacific/10 AM Eastern

https://t.co/byN5P2zN4Y
(if you've heard me give a spleen lecture before don't bother same material)

[@Hemepathguy @hemepathguy]

Will be giving an MD Anderson lecture tomorrow AM (& AM Pacific/9 Houston/10 Eastern) on a modern take on follicular lymphoma

https://t.co/8HV6FA3sH0

[@Hemepathguy @hemepathguy]

@KukMariya Myelolipomas are clonal. I published this a million years ago.

[@Hemepathguy @hemepathguy]

@PathologyKate I would wonder about measles.

[@Hemepathguy @hemepathguy]

@SibaElHussein So I'll reply, because Siba knows this is a hobby of mine. If MAL is positive, then PMLBCL. If all three P63, CD23, CD30, then yes PMLBCL. If only 2/3, then c/w. If only 1/3, then suggestive of...

[@Hemepathguy @hemepathguy]

@GersonPaull_MD @kis_lorand The deposition of significant amounts of immunoglobulin almost always means a plasma cell neoplasm. As such, I would recommend evaluation of SPEP and staging appropriate for myeloma

[@Hemepathguy @hemepathguy]

@dr_AmnaQ @UMichPath @UMichRISE @UTHoustonPath @TheJPCNCR @BroojAbro Not a guess. That is intravascular large B cell lymphoma

[Andrew Bellizzi 🇺🇦 @IHC_guy]

We're Getting the Band Back Together!!!

I'm thrilled to welcome everyone back for the 1st ISIMM webinar of the academic year.

Please join Wednesday, September 17 at 11 am ET for @slusagar's lecture "IHC Correlates in Bladder Pathology."

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

[@Hemepathguy @hemepathguy]

@MahaSakr19 I'd argue in bone marrow they are functionally the same thing.

[@Hemepathguy @hemepathguy]

#hemepath Interesting case...kidney biopsy

[@Hemepathguy @hemepathguy]

@Jas_Mc886 Done - you may want to look at my old posts. Lots of hemepath images. Probably enough to make a book!

[@Hemepathguy @hemepathguy]

#hemepath some examples of hemophagocytosis - case of HLH

[@Hemepathguy @hemepathguy]

@Jas_Mc886 No. It is quite rare. However, I have become more vigilant in looking for it in lymphomas, and raise the concern for HLH if I see "significant" hemophagocytosis.

[@Hemepathguy @hemepathguy]

@sza_jhcyto @AmerSwid Crank up the light. if there are colors other than black it is tattoo pigment.

[@Hemepathguy @hemepathguy]

#hemepath Langerhans cell histiocytosis

[@Hemepathguy @hemepathguy]

#hemepath. Bone marrow - Mycobacteria avium-intracellulare. H&E, PAS, AFB

[@Hemepathguy @hemepathguy]

#hemepath Sarcoid granuloma in bone marrow