Pathnologic @pathnologic
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Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
(so-called "pattern ... KyleBradleyMD "Pattern ... infection) - "Pattern ... #PatternC #Pathology ... #Microscopy #LymphNode
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
(so-called "pattern ... KyleBradleyMD "Pattern ... Monocytoid B cells ... #PatternA #Pathology ... #Microscopy #LymphNode
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Herpes Simplex Virus ... Lymphadenitis ... • HSV-infected cells ... #Virus #Lymphadenitis ... Microscopy #Clinical #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Paracoccidioides brasiliensis Lymphadenitis ... fibrosis (A) and well-formed ... seen within giant cells ... #brasiliensis #Lymphadenitis ... #Pathology #LymphNode
Salivary acinic cell carcinoma is usually an H&E diagnosis for me- but this zymogen-granule poor variant
Salivary acinic cell ... characteristic staining pattern ... Salivary #Acinic #Cell