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

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology #LymphNode ... #Clinical #Microscopy
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
and meatball” pattern ... TineaVersicolor #Rash #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... Pathology #Clinical #Microscopy
Salivary acinic cell carcinoma is usually an H&E diagnosis for me- but this zymogen-granule poor variant
characteristic staining pattern ... Carcinoma #Pathology #Microscopy