Pathnologic @pathnologic
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Path Geek - All things #pathology
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Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
• HSV-infected cells ... are present in ... Microscopy #Clinical #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Nodes, and lungs are ... fibrosis (A) and well-formed ... seen within giant cells ... Lymphadenitis #Pathology #LymphNode
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
KyleBradleyMD "Pattern ... Warthin-Finkeldey type giant cells ... Monocytoid B cells ... Lymphadenitis #PatternA ... Pathology #Microscopy #LymphNode
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
torso and upper arms ... and meatball” pattern ... Microscopy #Spaghetti #NEJM
Grouped Pustules on an Erythematous Base - On physical examination, grouped, coalescing pustules that had scalloped
seen on the left arm ... multinucleated giant cells ... Pathology #Herpes #Arm ... Smear #Microscopy #NEJM
Glucagonoma-Associated Rash - The rash involved the arms, genitals, and buttocks and had progressed to the
rash involved the arms ... tissue revealed a well-circumscribed ... Microscopy #CT #NEJM