Pathnologic @pathnologic
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Path Geek - All things #pathology
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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
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
HSV #Pathology #Microscopy ... #Clinical #LymphNode
Disseminated Blastomycosis - Computed tomography (CT) of his chest showed an infiltrate in the right upper
Computed tomography (CT ... budding (Panel C) #Clinical ... Blastomycosis #CT ... #KOH #BroadBasedBud ... #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
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology #LymphNode ... #Clinical #Microscopy
Urinary Tract Tuberculosis - Contrast-enhanced computed tomography (CT) of the abdomen showed mild dilatation of the
computed tomography (CT ... excretory phase on CT ... bacilli (Panel D) #Clinical ... Radiology #Pathology #CT ... AcidFastBacilli #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
and meatball” pattern ... #Clinical #Derm ... TineaVersicolor #Rash #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 ... #Clinical
Glucagonoma-Associated Rash - The rash involved the arms, genitals, and buttocks and had progressed to the
resolve (Panel D) #Clinical ... Glucagonoma #Rash #Microscopy ... #CT #NEJM