12 results
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
• HSV-infected cells ... Lymphadenitis #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
The many faces of the Hodgkin/Reed-Sternberg (HRS) cell: Even as medical students we are aware of
Reed-Sternberg cell ... (RS cell). ... Many variants exist ... #Pathology #Clinical ... #Microscopy
Comparison of basophils and mast cells (in bone marrow).

#Basophils #MastCells #Pathology #Marrow #Smear #Microscopy #Comparison #Table
basophils and mast cells ... Basophils #MastCells #Pathology ... Marrow #Smear #Microscopy ... #Comparison #Table
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
fibrosis (A) and well-formed ... seen within giant cells ... Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... #SignetRing #Cell ... #Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
A morphologic mosaic of NUT carcinoma: monotonous primitive cells, basophilic to clear cytoplasm, abrupt keratinization, prominent
monotonous primitive cells ... -NUT fusion or variants ... NUT #carcinoma #Pathology ... #Clinical #Microscopy
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
Hobnail variant ... cytoplasm, hobnail cells ... Thyroid #Carcinoma #Pathology ... #Clinical #Microscopy
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
Oncocytic Variant ... tumor is a Hurthle cell ... for oncocytic variant ... Medullary #Carcinoma #Pathology ... #Microscopy #Clinical
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
chitin in fungal cell ... preparation from culture Pathology ... visualize host cell ... #microbiology #microscopy ... fungus #comparison #table
Salivary acinic cell carcinoma is usually an H&E diagnosis for me- but this zymogen-granule poor variant
Salivary acinic cell ... zymogen-granule poor variant ... Salivary #Acinic #Cell ... #Carcinoma #Pathology ... #Microscopy #Clinical