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
Simplex Virus Lymphadenitis ... • HSV-infected cells ... Simplex #Virus #Lymphadenitis ... Pathology #Microscopy #Clinical
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Paracoccidioides brasiliensis Lymphadenitis ... fibrosis (A) and well-formed ... seen within giant cells ... #brasiliensis #Lymphadenitis ... Pathology #LymphNode #Clinical
Comparison of basophils and mast cells (in bone marrow).

#Basophils #MastCells #Pathology #Marrow #Smear #Microscopy #Comparison #Table
Comparison of basophils ... and mast cells ... Smear #Microscopy #Comparison ... #Table #Clinical
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
typical of HIV lymphadenitis ... Pattern A" in HIV Lymphadenitis ... Warthin-Finkeldey type giant cells ... Monocytoid B cells ... Microscopy #LymphNode #Clinical
Squamous-Cell Carcinoma of the Tongue - Intraoral examination revealed a well-circumscribed superficial ulcer, with a homogeneous
Squamous-Cell Carcinoma ... examination revealed a well-circumscribed ... invasive squamous-cell ... carcinoma (Panel B) #Clinical ... Squamous #Microscopy #NEJM
Rhabdoid Cells versus Rhabdomyoblastic Cells

Rhabdoid Cells:

• Prominent nucleolus 

• Paranuclear inclusions 

• Pleomorphism Ø 

• CK/EMA
Rhabdoid Cells versus ... Rhabdomyoblastic Cells ... Rhabdoid Cells ... Rhabdomyoblastic #Comparison ... Pathology #Microscopy #Clinical
Glucagonoma-Associated Rash - The rash involved the arms, genitals, and buttocks and had progressed to the
tissue revealed a well-circumscribed ... resolve (Panel D) #Clinical ... Microscopy #CT #NEJM
Grouped Pustules on an Erythematous Base - On physical examination, grouped, coalescing pustules that had scalloped
multinucleated giant cells ... #Clinical #Derm ... Smear #Microscopy #NEJM