14 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 ... sinonasal #Carcinoma #Pathology
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
Differential Diagnosis Algorithm ... Thrombocytosis: cells ... • Excessive fist ... 7) - principal cells ... Differential #Diagnosis #Algorithm
Olfactory Neuroblastoma Pathology

Morphology and other IHC clinched the diagnosis of olfactory neuroblastoma here. The tumor had
Neuroblastoma Pathology ... sustentacular cells ... Lisa Rooper @LisaRooperMD ... Neuroblastoma #Pathology
A morphologic mosaic of NUT carcinoma: monotonous primitive cells, basophilic to clear cytoplasm, abrupt keratinization, prominent
monotonous primitive cells ... Lisa Rooper @LisaRooperMD ... NUT #carcinoma #Pathology
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
cytoplasm, hobnail cells ... Lisa Rooper @LisaRooperMD ... Thyroid #Carcinoma #Pathology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
Differential Diagnosis Algorithm ... Too many cells in ... honestly, this list ... a good idea to call ... Differential #Diagnosis #Algorithm
Langerhans cell histiocytosis presenting as a solitary jaw cyst. Classic reniform nuclei, prominent eosinophils, S100+, CD1A+,
Langerhans cell ... Lisa Rooper @LisaRooperMD ... #Langerhans #cell ... histiocytosis #Jaw #Pathology
Corpora Amylacea - Pathology

This olfactory nerve margin looks hypercellular at low power- is it involved by
Corpora Amylacea - Pathology ... small round blue cell ... Lisa Rooper @LisaRooperMD ... Corpora #Amylacea #Pathology
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
Pathology - Juvenile Xanthogranulomas

Learned a new pitfall: a subset of juvenile xanthogranulomas are S100+ with emperipolesis
Pathology - Juvenile ... with Touton giant cells ... Lisa Rooper @LisaRooperMD ... Xanthogranulomas #Pathology