Pathnologic @pathnologic
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Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Herpes Simplex Virus ... DennisOMalleyMD) #Herpes ... Lymphadenitis #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
Borrelia recurrentis Infection - Spirochetes were visible (arrows), a finding that suggested louseborne relapsing fever #Clinical
relapsing fever #Clinical ... #Pathology #BorreliaRecurrentis ... Recurrentis #Smear #Microscopy ... #NEJM
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
Here is a lymph ... Lymphadenitis #PatternC #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
Here are the morphological hallmarks of Rhabdomyosarcoma.

 - Broken arrow sign 

 - tad-pole rhabdomyoblasts
Here are the morphological ... Rhabdomyosarcoma #Hallmarks #Pathology ... #Microscopy #Clinical
A non-subtle example of true Sezary syndrome.  Patient presented with erythroderma without antecedent history of
of true Sezary syndrome ... mjcascio #Sezary #Syndrome ... #Cells #Clinical ... #Pathology #Smear ... #Microscopy #Hematology
Comparison of basophils and mast cells (in bone marrow).

#Basophils #MastCells #Pathology #Marrow #Smear #Microscopy #Comparison #Table
Basophils #MastCells #Pathology ... Marrow #Smear #Microscopy ... Comparison #Table #Clinical ... #Diagnosis
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
Beautiful acanthocytes/spur cells in a patient with McLeod Syndrome. X-linked disorder characterized by reduced expression of
patient with McLeod Syndrome ... SpurCells #McLeod #Syndrome ... #Smear #Pathology ... #Microscopy #Clinical
African Trypanosomiasis - The examination was notable for the two erythematous lesions, each measuring 3 to
rhodesiense) (Panel B) #Clinical ... #Derm #Pathology ... #Smear #Microscopy ... TrypanosomaBrucei #NEJM