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Reposted by Sirion Danglaoun

PathologyOutlines.com @pathologyoutlines.bsky.social · 27/04/2026

Case of the Month: A premenopausal woman with a 0.8 cm suspicious mass on breast imaging underwent breast core biopsy. What is your diagnosis? Follow the link in the comments for the case! #Pathology #PathologyOutlines #Diagnosis #PathSky

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Maria Gubbiotti, MD,PhD @mariagoobs.bsky.social · 11/11/2024

Myxopapillary ependymoma grossly has a characteristic sausage-shaped appearance. Commonly found associated with the filum terminale, it has a fibrillary glial appearance in a myxoid background. Though previously categorized as CNS WHO grade 1, it is now considered grade 2 #pathsky #medsky #neuropath

A sausage shaped tumor with attached filamentous band

A squash preparation of a fibrillary neoplasm with myxoid background

H&E stained section of papillae with myxoid cores

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PathologyOutlines.com @pathologyoutlines.bsky.social · 23/04/2025

Image of the Week! Submitted by: Chhanda Das, M.D., D.N.B. Directory Profile: buff.ly/b7mDAWt Subspecialty: Neuropathology Diagnosis: Pituitary adenoma #Pathology #PathologyOutlines #NeuroPath #PathSky

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Sirion Danglaoun @justsmilelady.bsky.social · 29/05/2025

A 19-year-old man presented with brain tumor at pineal region and cerebellar region. AE1/AE3 : weak staining GFAP: focal near 50% High Ki-67 proliferative index=60% What is it? #neuropath #pathology #pathsky #histology #CNStumor #CNSpath

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John Scalzi @scalzi.com · 10/02/2025

For those of you traumatized by the previous post, a cat picture.

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Boonyarit Cheunsuchon MD @roboonya.bsky.social · 03/01/2025

Alport syndrome in middle aged man with hx of hearing impair. Presents with proteinuria, RBC 3-5, UPCR 4, SCr 2.5. Characteristic interstitial foam cells noted. #renalpath #pathsky #nephrology

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Katrina Collins || Pathologist @katcollmd.bsky.social · 12/01/2025

#slidearchiveseries history of radical orchiectomy with pure teratoma, serum tumor markers (post-orchiectomy): AFP 537, increased to 469, HCG 2; status post chemotherapy x 4 cycles ➡️ retroperitoneal lymph node dissection #gupath #pathsky

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Joe @joe-pathology.bsky.social · 02/02/2025

One of the nastiest skin tumours. This one in a vessel enroute to destroy the respiratory membrane diffusion gradient. #MerkelCellCarcinoma #pathology #dermatology #PathSky 👿

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AndrewFolpe @folpe-mn-st.bsky.social · 05/02/2025

#PathSky 79M with a superficial neck mass. Wildly pleomorphic, quite cellular- undifferentiated pleomorphic sarcoma, right? There are basically no mitoses though, the cells have abundant granular-glassy cytoplasm, there is a lot of inflammation, and many bizarre cells have nuclear inclusions.

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Jorge Novo, MD @novopath.bsky.social · 04/02/2025

A cute finding in apocrine metaplasia, do you know what it is? #breastpath #pathsky #pathtwitter #pathx #patologia

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AndrewFolpe @folpe-mn-st.bsky.social · 06/02/2025

#PathSky 43F with a solitary lung mass. Relatively circumscribed, nests and interesting micropapillae of lightly eosinophilic epithelioid cells. Negative for everything except TFE3. Dx?

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Dane @dhisto.bsky.social · 07/02/2025

Schaumann body - calcified inclusion in a giant cell from a colonic biopsy, Crohn’s patient #pathsky #pathology #GIPathology #histology #histopathology

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Sirion Danglaoun @justsmilelady.bsky.social · 07/02/2025

Patient presented with chronic anemia Bone marrow biopsy was performed. +PAS +CD68 #pathsky #skypath #hemepath #pathology #hemato

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Sanjay Mukhopadhyay @smlungpathguy.bsky.social · 24/11/2024

3. Disseminated histoplasmosis If you can spare a moment, please add a teaching point about this infection in the comments @germhuntermd.bsky.social #pathology #pulmpath #pathsky #pathbugs #crittersonbluesky

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Sirion Danglaoun @justsmilelady.bsky.social · 15/01/2025

Adrenal necrosis GMS and PAS stains show small uniform oval, narrow based budding yeasts. Dx. Adrenal histoplasmosis #adrenalgland #histology #pathsky #histoplasmosis #skypath #pathology #idpath

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Megan @megothelioma.bsky.social · 14/01/2025

The wording of this diagnosis caught my eye in an old ppt. 32M h/o abd pain and diarrhea after ending steroid therapy for lupus. Histology shows suppurative inflammation limited to the submucosal layer. Phlegmonous enteritis is the given dx, though that seems to be an outdated term. #gipath #pathsky

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Sirion Danglaoun @justsmilelady.bsky.social · 07/01/2025

Metastatic malignant melanoma at groin node #pathsky#pathology #histology #melanoma #dermpath

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Hallie Dolin, MD, PhD @halliedolin.bsky.social · 01/01/2025

To narrow down the differential, I'd guess: CD4, CD8, CD163, ALK, and EBV.

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CorpusMedicus @corpusmedicus.bsky.social · 31/12/2024

What is the cause of this washed out understaining artifact? It appears randomly and affects only a few biopsies in the batch. #histologyprotocols #medicine #science #pathology #histology #research #histotechnologists #histologysupervisors

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Dane @dhisto.bsky.social · 31/12/2024

Cute little asteroid body #pathsky #pathology #histology #histopathology

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Lucas Massoth @lucasmassoth.bsky.social · 20/11/2024

Acute promyelocytic leukemia, Giemsa stain #pathsky #medsky #pathology #oncology #hemepath

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Lucas Massoth @lucasmassoth.bsky.social · 21/11/2024

Nodular lymphocyte predominant Hodgkin lymphoma exhibiting characteristic PD1+ T-cell rosettes around tumor cells #Pathsky #Pathology #Hemepath

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Ryan Elliott @ryanelliott.bsky.social · 23/11/2024

Tight clustering of megakaryocytes (arrow) with dysplastic features (irregular, bulbous nuclei) suspicious for PMF. Would love a reticulin stain to assess for presence of fibrosis to further support a dx of PMF! #pathsky #histology #pathology #hemepath #hemesky #MPN

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Ryan Elliott @ryanelliott.bsky.social · 24/11/2024

Intestinal T/NK lymphoma! Can be very aggressive or very indolent! Aggressive: EATL = Refractory celiac MEITL = Like EATL, no celiac Indolent: IT-LPD = CD4,CD8 types JAK-STAT Slight risk transformation NK-enteropathy = CD56+ JAK3 #MedSky #hemesky #pathsky #hemepath [Jaffe. Haematol.20]

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Megan @megothelioma.bsky.social · 02/12/2024

My 1st #pathsky post! Photogenic flame cells in a myeloma aspirate 😍 #hematopathology #hemepath #pathology

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Chandra Krishnan, MD @hematogones.bsky.social · 10/12/2024

Announcement: I will be doing a 2 part pediatric lymph node workshop in January. Targeted to residents, #pedipath/#hemepath fellows and anyone seeing nodes as part of their service. Lots of great cases and WSI! Discounts available for trainees! education.spponline.org/content/2025...

education.spponline.org

2025 January Workshops | Society for Pediatric Pathology

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KHKV, MBBS @hookonpath.bsky.social · 20/12/2024

DDX of superficial pediatric small round blue cell tumors are sarcomas (Ewing family and fusion-associated); rhabdomyosarcoma; lymphomas/leukemias; neuroblastoma #dermpath #surgpath #blueskypath #blueskydermpath #blueskysurgpath #hemepath #blueskyhemepath #pathology #blueskypathology

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Joe @joe-pathology.bsky.social · 16/12/2024

The pathological hallmark of #AllergicContactDermatitis #LangerhanCell microaggregates in the epidermis #pathology #dermatology #pathsky 😁

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Sarah Wu @sarahjwu.bsky.social · 20/12/2024

Snow in Boston! Sharing a crazy "snowflake-like" mitosis in this megakaryocyte. Looking forward to being more active on this platform in the new year! #pathology #hemepath

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Sirion Danglaoun @justsmilelady.bsky.social · 31/12/2024

A 37 year-old male with soft tissue mass at L4 with bone destruction CD45+, CD30+ scatter, CD3 small+, CD20-,MPO- Which IHC I should perform for further investiagation? #hemepath #pathology #hematology #pathsky #histology

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Sirion Danglaoun @justsmilelady.bsky.social · 13/12/2024

▶️ Xanthelasma of eyelid Lipid laden foamy histiocytes in superficial dermis, clustering around blood vessel walls #dermpah #pathsky #pathology #histology

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Kevin Keel @ucpath.bsky.social · 12/12/2024

No one does a peroidic acid-Schiff stain (PAS) quite as pretty as the UGA veterinary histology lab. Beautiful stain of Aspergillus sp. in the lung of an ivory-billed gull. #fungi #mycoses #vetpath #pathsky #pneumonia

A PAS-stained section of lung. Fungal hyphae stain purple and invade the remnants of an airway. The light green counterstain contrasts nicely with the fungal hyphae invading the parenchyma.

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Ryan Elliott @ryanelliott.bsky.social · 11/12/2024

🩸🩺 Feel free to check out these active accounts for all things hematology and internal medicine. #hemesky #medsky #IMsky #internalmedicine #hemeonc #oncsky #hemepath

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Sirion Danglaoun @justsmilelady.bsky.social · 12/12/2024

Cutaneous mixed tumor / chondroid syringoma ▶️ Well circumscribed but unencapsulated -chondroid or myxoid stroma -benign bland epithelial and myoepithelial cells that form glands, ducts, cysts, reticular lace-like networks, nests Ref. Pathology outlines #pathsky #pathology #dermpath #histology

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Gonzalo de Toro @gonzadetoro.bsky.social · 27/11/2024

#pathsky “When you wonder what a reniform nucleus is, and she looks at you in disbelief.” #dermpath #pathology #dermatology

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Ryan Elliott @ryanelliott.bsky.social · 27/11/2024

🩸 Hairy cell leukemia! - Indolent neoplasm of mature B cells—appear w/ cytoplasmic hair-like projections. - PB cytopenias - Splenomegaly - Immunohistophenotyping: CD11c, CD19, CD20 bright, CD22 bright, CD25, CD103, CD123 and CD305 (LAIR) - BRAF V600E > 95% of cases #hemesky #pathsky #hemepath

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Lauren Smith, MD, HEC-C @lbsmithmd.bsky.social · 27/11/2024

3 month old baby. What is your diagnosis? #pathsky #pathology #heme #medsky

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Alexander Nader, Einschauer, Pathologist @alexnader.eurosky.social · 28/11/2024

#pathsky weak BRAF v600E IHC in bone marrow: Erdheim-Chester's disease in a case with retroperitoneal fibrosis. 1/2

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