Meryem Terzioglu, MD

Pseudocarcinomatous urothelial hyperplasia (PCUH): • Florid nests/cords of urothelium, mimic invasion • Vascular injury, hemorrhage ± fibrin thrombi Seen in: • Prior pelvic radiation • Ischemic injury 👉 Not a neoplasm — but a classic mimic. pubmed.ncbi.nlm.nih.gov/23228381/

@TingZhaoPathdoc @MGBpathology @MGHPathology Metastatic CCRCC to 🦴bone?

80s M. Location and diagnosis? #PathTwitter @MGBpathology @MGHPathology

@PeterKobalka @kis_lorand Endometrial stromal sarcoma?? Not hematolymphoid, right?

61F never smoker, large axillary mass with widespread Mets including multiple brain Mets. CD10 strongly positive (shown). Mutations in p53, RB1, and TERT. DDx? Stain suggestions? #pathx #pathtwitter #cnspath #neuropath #neuropathology

#GUpath prostate bx (only atypical focus in entire series) Dx: "PIN-like" prostatic adenocarcinoma (I don't include "PIN-like" in my topline Dx, more in micro description; I grade as usual, here 3+3)

@officer_Lew @thejourneymate This can’t be real. Is this AI?

WOW🚨: A surgeon’s career is over after her patient suffered permanent, debilitating brain damage during an operation. The doctors were caught twirling while the patient was under…smh, I’m running out of words 🤦🏿‍♂️

@GuannanTiffany @MirunaPopescu13 Indeed!

Self-explanatory case—easy to miss.⚒️ Either already overlooked, or waiting to be. Early recognition matters—treatment is available for systemic disease. #DxMindmap #PathTwitter #JHUpath #Prostatecarcinoma #GUpath

@GuannanTiffany @kis_lorand CMV?

CIS in bladder is hard enough—now add a mimicker 👀😳 40 y M, HIV+. Good news: one stain nails it. 👉 What is the stain? More CIS mimickers in the thread 👇 #DxMindmap #GUpath #Bladdercancer #PathTwitter #JHUpath

#PathQuiz 🔬 #Stomach A) Foveolar-type adenoma B) Fundic gland polyp C) Pyloric gland adenoma D) Oxyntic gland adenoma #Pathology #GIPath @IARCWHO Clue in caption 🧐

Mediastinum, 30y #pathology #patologia

#GUpath prostate biopsy for elevated PSA at first blush foamy gland pattern prostatic adenocarcinoma comes to mind... but other DDx include Cowper gland (Dx here) or mucinous metaplasia ⏬cont'd

DCIS with clinging architecture vs flat epithelial atypia (FEA) Dr Sciallis Cleveland Clinic MPS #Breastpath #pathtwitter #PathX #pathology #PathResident #NIPPathX

Columnar cell hyperplasia and Clinging DCIS Dr Sciallis Cleveland Clinic MPS #Breastpath #pathtwitter #PathX #pathology #PathResident #NIPPathX

@AnaPath10 CMV colitis with ulcer?

Hx lung SqCC on PD-1 inhibitor. Colorectal biopsies for suspected immuno-induced colitis. Thoughts? #pathtwitter #pathx #GIpath #pathresidents

@kis_lorand Prostatic adenocarcinoma involving seminal vesicle?

#pathtwitter how would you report the findings in this prostate biopsy? #pathology #GUpath

@DanGrahamMD Ddx: Medullary, hyalinizing trabecular tumor, paraganglioma?

60s F 5cm hypoechoic thyroid nodule. Dx? #HeadandNeckPath #EndocrinePath #PathX #PathTwitter

Happy New Year to everyone! First case of 2026. Female in her 50s. Multiple mixed sclerotic and lytic lesions involving the thoracic spine and pelvis. #PathX #PathTwitter #BSTPath

Fine needle aspiration of a neck lymph node. What is the diagnosis? Answer: buff.ly/3GvZfbO #PathArt #PathTwitter #Cytopath #Pathology

The sinusoidal pattern seen in bone marrow involvement by Marginal zone lymphoma. #Hemepath #PathX

If the specimen isn’t adequate, no diagnosis can be rendered. Request more tissue. #pathology #pathx #pathtwitter #hemepath

@megha_lalcheta Do you have frozen section pictures by chance?

Ovarian mass….. 32/F #GynPath #SurgPath #PathX #Pathology #Pathtwitter #Pathresidents