ERG positive tumour (No 1).... Middle aged man, sole of foot... ERGo it is what ?

FIBROUS DYSPLASIA. NB: spindle-stellate cells; eosinophilic cytoplasm; monomorphic ovoid nuclei; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming.

30 yo F shoulder papule. What ONE stain can solve this? WSI digital slide: kikoxp.com/posts/21597 Immunostains: kikoxp.com/posts/21599 Answer & video: kikoxp.com/posts/21437 #pathology #pathologists #pathTwitter #dermpath #dermatology #dermatologia #dermtwitter #BSTpath

Thank you for playing. This, my friends, is a non-cutaneous syncytial myoepithelioma of bone. Wouldn't have recognized it if it weren't for Greg Charville and his excellent post: x.com/Greg_Charville… Here is a paper he and colleagues came up with: pubmed.ncbi.nlm.nih.gov/37548750/

Pancreas Intraductal papillary mucinous neoplasm (IPMN) -Gastric -Intestinal -Pancreatobiliary -Intraductal oncocytic papillary neoplasm (IOPN) Helpful stains, see next post 👇 Dr Basturk #USCAP2024 #pathology #pathologist #NIPPathX #pathresidents #pathtwitter #PathX

Kidney with 3 tumors, 1 mutation Tumor #1, diagnosis? A) Angiomyolipoma B) Well-differentiated liposarcoma C) Mixed epithelial & stromal tumor #GUPath #PathTwitter #Pathology #PediPath 🔬from Dr. Victor Reuter conferences.aiforia.com/Public/USCAP/0…

🟥Sclerosing Perineurioma Proliferation of small epithelioid to ovoid cells and spindle cells with long and thin cytoplasmic processes highlighted with GLUT1 (picture) and EMA IHC These benign tumors frequently arise in the fingers of young patients. #BSTpath #pathology

Skin of back, adult #dermpath #pathtwitter #BSTpath #hemepath #Pathresidents

A 50 year old gentleman presented with headache and nasal obstruction found to have a large nasal mass with intracranial extension. A biopsy followed by tumor resection was performed. What is your opinion? #Pathology #Pathtwitter #PathX #ENTpath #HeadNeckpath

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Rehdam (Madiha) Running IHC on medullarys is mandated, esp for Ki-67.

Red, White, and Blue 🔴⚪️🔵 ~ Oncocytic, clear, and chief cells from different areas of a parathyroid adenoma ~ #ENTpath #Pathology #Histology

Anyone have good images or microscopic descriptions of these two kinds of calcification ? Difficult to get. #HN_Path pubmed.ncbi.nlm.nih.gov/33878496/

Extra- and intracellular hyaline globules (HGs) in a pheochromocytoma. Quite pretty, but of unclear significance. HGs can also be seen in adrenal cortical tumors and other type of neoplasia, and is not considered pathognomonic for pheo.

Colleague's old case. No history. “eyelash sign” (this time not food related) Amyloidosis. PASM #renalpath #amyloid

40 F. 10 cm deep thigh mass. Digital slide 🔬 kikoxp.com/posts/11800. Answer ✅ youtu.be/QDb68_G1HR4?si… Differential dx: kikoxp.com/posts/12124 #BSTpath #pathologists #pathology #pathTwitter

x.com/William2853894…

Secretory carcinoma (SC) Distinctive malignant tumor of intercalated duct-type cells and secretions, generally characterized by ETV6 rearrangements * Zymogen granule poor acinic cell carcinomas (AiCC) are usually SC