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 ... Lymphadenitis #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
Excoriated papules with honey-colored crusting were present on the abdomen, back (Panel A), arms, and legs.
mite under light microscopy ... Clinical #Derm #Pathology ... #Scabies #Microscopy ... #Rash #NEJM
Borrelia recurrentis Infection - Spirochetes were visible (arrows), a finding that suggested louseborne relapsing fever #Clinical
fever #Clinical #Pathology ... Recurrentis #Smear #Microscopy ... #NEJM
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
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
and meatball” pattern ... Clinical #Derm #Pathology ... TineaVersicolor #Rash #Microscopy ... #Spaghetti #NEJM
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
African Trypanosomiasis - The examination was notable for the two erythematous lesions, each measuring 3 to
Clinical #Derm #Pathology ... #Smear #Microscopy ... TrypanosomaBrucei #NEJM
Eyelid Melanoma - Despite conservative interventions, the stye had persisted and the skin had become noticeably
C) #Clinical #Pathology ... Eyelid #Melanoma #Microscopy ... #NEJM
Strongyloides stercoralis Hyperinfection - Physical examination revealed reticulated purpuric patches with dusky centers on the abdomen,
Clinical #Derm #Pathology ... FilariformLarvae #Microscopy ... #NEJM