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
paracortex • HSV-infected ... Lymphadenitis #HSV ... Microscopy #Clinical #LymphNode
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
of late phase HIV ... "Pattern C" in HIV ... with late phase HIV ... pattern C #HIV ... Pathology #Microscopy #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology #LymphNode
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
hyperplasia typical of HIV ... in early phase HIV ... "Pattern A" in HIV ... Monocytoid B cells #HIV ... Pathology #Microscopy #LymphNode
Milk of Urate Bulla - A new blister overlying the radial aspect of the second interphalangeal
preexisting tophus on his ... of negatively birefringent ... Bulla #Negatively #Birefringent
Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
erythrocytes) by his
Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
erythrocytes) by his
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode
Focal epithelial hyperplasia/Heck disease. Acanthotic squamous epithelium with widened, confluent rete ridges, mild koilocytic change, and
Usually caused by HPV
Disseminated Blastomycosis - Computed tomography (CT) of his chest showed an infiltrate in the right upper
tomography (CT) of his