12 results
SMARCB1-deficient sinonasal carcinoma: high grade tumors with varying proportions of basaloid and plasmacytoid/rhabdoid cells; CK+, SMARCB1
plasmacytoid/rhabdoid cells ... Lisa Rooper @LisaRooperMD ... Carcinoma #Pathology #Microscopy
A morphologic mosaic of NUT carcinoma: monotonous primitive cells, basophilic to clear cytoplasm, abrupt keratinization, prominent
monotonous primitive cells ... Lisa Rooper @LisaRooperMD ... Pathology #Clinical #Microscopy
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
cytoplasm, hobnail cells ... Lisa Rooper @LisaRooperMD ... Pathology #Clinical #Microscopy
Olfactory Neuroblastoma Pathology

Morphology and other IHC clinched the diagnosis of olfactory neuroblastoma here. The tumor had
sustentacular cells ... Lisa Rooper @LisaRooperMD ... Neuroblastoma #Pathology #Microscopy
Langerhans cell histiocytosis presenting as a solitary jaw cyst. Classic reniform nuclei, prominent eosinophils, S100+, CD1A+,
Langerhans cell ... Lisa Rooper @LisaRooperMD ... #Langerhans #cell ... Jaw #Pathology #Microscopy
Salivary acinic cell carcinoma is usually an H&E diagnosis for me- but this zymogen-granule poor variant
Salivary acinic cell ... Lisa Rooper @LisaRooperMD ... Salivary #Acinic #Cell ... Carcinoma #Pathology #Microscopy
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
tumor is a Hurthle cell ... Lisa Rooper @LisaRooperMD ... Carcinoma #Pathology #Microscopy
Corpora Amylacea - Pathology

This olfactory nerve margin looks hypercellular at low power- is it involved by
small round blue cell ... Lisa Rooper @LisaRooperMD ... Amylacea #Pathology #Microscopy
Eosinophilic angiocentric fibrosis: IgG4-related disease of the upper aerodigestive tract. Distinctive concentric (onion-skin) perivascular fibrosis and
50 IgG4+ plasma cells ... Lisa Rooper @LisaRooperMD ... Pathology #Clinical #Microscopy
Focus of Metastatic Melanoma Colonizing a Germinal Center

I thought these big cells were funny immunoblasts- until
thought these big cells ... Lisa Rooper @LisaRooperMD ... Pathology #Clinical #Microscopy