Hairy cell leukemia involving blood/marrow. Patient presented with cytopenias. Marrow not terribly hypercellular, so very easy to overlook an infiltrate like this if the flow isn't positive. #hemepath #pathology

2/2 Immunostain shown is CD99 CK and EMA neg FISH: EWSR1 rearrangement 🔬 Superficial Ewing sarcoma Here is a review on superficial ES: ncbi.nlm.nih.gov/m/pubmed/23327… And another one on cutaneous/superficial neoplasms with EWSR1 rearrangement: ncbi.nlm.nih.gov/m/pubmed/23399… #BSTPath

👩🏻‍⚕️Day 111: I’ll call this piece “the field of aspergillus” 👩🏻‍🎨 it’s kind of like a field of flowers 💐 but much less likely to smell nice and waaaaaay more likely to cause lung infections in immunocompromised patients. #pathart #pathology #microbiology

@histiocytosisX Seriously... Med school ----------------> Now 🤔 😭 EWSR EWSR = = Ewing Barely better sarcoma than H&Es

A quick cartoon on hairy cell leukemia to help you revise the salient points. Hairy cell- the projections from cytoplasmic resembling hair Leukemia- tumor cells are in blood means they have originated from bone marrow. #pathodoodles #pathology #pathologyresidents #hemepath

(H&E, 600x) Lung, interalveolar septum #histology #anatomy #pathology #oncology #cancer #lung #emphysema #medschool #mayoclinic #usmle

F,60+, Serous ovarian borderline tumor, unilateral, without ovarian surface involvement, with micropapillary pattern. #gynpath #pathoutpic

When your antral reactive gastropathy comes with thrombi... That's a GAVE! 👯Gastric Antral Vascular Ectasia👯 🍉Watermelon on endoscopy 🩸Causes bleeding 🫘Assoc. with renal, liver and connective tissue/autoimmune diseases. 💁‍♂️Cd61 great helper! #GiPath #Pathology

Striking mucinous pattern with giant cells in this metastatic lung adenocarcinoma. #pathology #neuropath #pathtwitter

😥A young patient with an alveolar sarcoma (AS) in the oral cavity operated in her adolescence and 10y after numerous metastatic foci (lung - pics, brain and breast). Metastasis from AS: 1st manifestation or very late in the course of the disease. #bstpath #pathology

Colloid scalloping in a thyroid with Graves disease ~ #endocrine #pathology #thyroid #PathArt

Normal bowel has +calretinin intrinsic nerve fibers without cholinergic extrinsic nerve "hypertrophy" Hirschsprung bowel shows loss of calretinin and ropey staining for AChE/ChT 🖼️🙏Dr. Raj P. Kapur pathologyoutlines.com/topic/colonhir… #GIPath #PathTwitter #PediPath ✅B for #1, #2, & #3

2 year old male with multiple lymphadenopathy 🔬 ⁃Marked sinus expansion ⁃Large histiocytes ⁃Emperipolesis IHC: S100(+) CD207(-) CD1a (-) DX: Rosai-Dorffman disease #Hemepath #PediPath #SurgPath #pathology #PathBoards Toño Navarro, M.D. 🔬🎗️ Luis Humberto Cruz C

Bicornuate uterus 🔸Due to impairment in the fusion of Müllerian ducts. 🔸Isolated or associated w/ uterine & genital malformations (v.g. renal agenesis). 🔸Longitudinal vaginal septum is observed in 25% of cases. 🔸Associated w/ adverse reproductive outcomes. #PediPath #GynPath

Foamy Gland Pattern Prostatic Adenocarcinoma ~ #GUpath #ProstatePathology #Pathology ➡️ Xanthoma-like (foamy) cytoplasm ➡️ Small pyknotic looking nuclei (may be deceptive!) ➡️ Gleason grading is still done based on architectural pattern

20 F. Slowly growing "cyst" on buttock for 5 yrs. Diagnosis? WSI digital slides: kikoxp.com/posts/8158 Immunostain: kikoxp.com/posts/11583 Answer & video: kikoxp.com/posts/11618 #pathology #pathologists #pathTwitter #dermpath #dermatology #dermtwitter #BSTpath

Nasopharyngeal carcinoma of undifferentiated type, link:plus.google.com/u/0/photos/+Ne… #pathology #pathologists #HEA50Stain

1. What is this (lobectomy, left lower lobe)? 2. What piece of clinical info will clinch the diagnosis? 3. Benign or malignant? #Pulmpath Pembe Oltulu, MD Missle Pathology Xiaoyin "Sara" Jiang, MD (She/Her) Tania Labiano @pathnoob

This angiomatoid (malignant) fibrous histiocytoma has a lymphoid cuff at low magnification and hemorrhagic cystic spaces. This example shows desmin expression. These pediatric tumors usually behave indolently with rare aggressive behavior. innovativepathologypress.com