Pathnologic @pathnologic
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Path Geek - All things #pathology
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Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Paracoccidioides brasiliensis ... Paracoccidioides #brasiliensis ... Lymphadenitis #Pathology #LymphNode ... #Clinical #Microscopy
Pathology - Castleman disease. 

Mediastinal mass in a younger woman.

Histologic Features of Castleman disease, hyaline vascular
blood vessels - Germinal ... center 'twinning ... - Hyalinized germinal ... Pathology #Smear #Microscopy ... #Clinical
Focus of Metastatic Melanoma Colonizing a Germinal Center

I thought these big cells were funny immunoblasts- until
Melanoma Colonizing a Germinal ... Center I thought ... melanoma colonizing a germinal ... Metastatic #melanoma #germinal ... #Clinical #Microscopy
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
proliferative germinal ... PatternA #Pathology #Microscopy ... #LymphNode #Clinical
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
every oncocytic thyroid ... here should raise concern ... Carcinoma #Pathology #Microscopy ... #Clinical
Diffuse Sclerosis Variant—PTC 
 - Rare variant of PTC 
 - Approximately 3% ofall PTC
PTC #Papillary #Thyroid ... #Cancer #Pathology ... #Clinical #Gross ... #Microscopy