One low-power image is all you need of this distinctive posterior fossa mass in an 8 year-old boy. Diagnosis? Most likely genotype? #pathology#neuropath#PathTwitter#pedipath
Case 1: Targetoid hemosiderotic hemangioma. Rare, benign vascular proliferation demonstrating hobnailed endothelial cells protruding into vessel lumina. Typically presents as a pigmented lesion on the lower extremities. Also known as hobnail hemangioma.
This was a tricky case bc it was trich-y!
Clear herpes but also trichomonas hiding in the bckgnd, mostly adherent to squamous cells. The bckgnd inflammatory changes were a clue, which can be seen on low power
A reminder that you can have more than one infxn/lesion! #CytoPath
Endometrial hyperplasia: some of the important morphological differentials. Basic facts for residents! Key words: tubal metaplasia, cystic atrophy, disordered glands, stromal breakdown, endometrial polyp
#BasicFactsForResidents#MakeSurgiPathEasy#EndometrialHyperplasiaDd
: Merkel cell carcinoma. Aggressive cutaneous neoplasm of neuroendocrine differentiation. Basaloid appearance of cells with high N:C ratio with granular to clear chromatin. Associated with Merkel cell polyomavirus. CK20 perinuclear dot-like+, neuroendocrine markers+.