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
Herpes Simplex Virus ... DennisOMalleyMD) #Herpes #Simplex ... Lymphadenitis #HSV ... #Pathology #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 ... Lymphadenitis #PatternC #Pathology ... #Microscopy #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
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 ... Lymphadenitis #PatternA #Pathology ... #Microscopy #LymphNode
Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
erythrocytes) by his ... #Clinical #Path ... #Blood #Smear #Microscopy
Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
erythrocytes) by his ... #Clinical #Path ... #Blood #Smear #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
Squamous-Cell Carcinoma of the Tongue - Intraoral examination revealed a well-circumscribed superficial ulcer, with a homogeneous
red and white patch ... B) #Clinical #Pathology ... Tongue #Squamous #Microscopy
Focal epithelial hyperplasia/Heck disease. Acanthotic squamous epithelium with widened, confluent rete ridges, mild koilocytic change, and
Usually caused by HPV ... Heck #disease #Pathology ... #Microscopy #Clinical
Milk of Urate Bulla - A new blister overlying the radial aspect of the second interphalangeal
preexisting tophus on his ... polarized light microscopy ... B) #Clinical #Pathology ... #Birefringent #Microscopy