Pathnologic @pathnologic
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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
Squamous-Cell Carcinoma of the Tongue - Intraoral examination revealed a well-circumscribed superficial ulcer, with a homogeneous
Squamous-Cell Carcinoma ... red and white patch ... carcinoma (Panel B) #Clinical ... #Pathology #Honc ... #Microscopy #NEJM
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
Lymphadenitis #PatternC #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
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
Strongyloides stercoralis Hyperinfection - Physical examination revealed reticulated purpuric patches with dusky centers on the abdomen,
Bronchoscopy revealed diffuse ... #Clinical #Derm ... #Pathology #InfectiousDisease ... FilariformLarvae #Microscopy
Disseminated Cysticercosis - Magnetic resonance imaging (MRI) of the head revealed diffuse hyperintense septated cystic lesions
head revealed diffuse ... #Clinical #Radiology ... #Pathology #MRI ... Taenia #Solium #Microscopy
Focal epithelial hyperplasia/Heck disease. Acanthotic squamous epithelium with widened, confluent rete ridges, mild koilocytic change, and
Acanthotic squamous ... Heck #disease #Pathology ... #Microscopy #Clinical
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
Lymphadenitis #PatternA #Pathology ... #Microscopy #LymphNode ... #Clinical
Diffuse Sclerosis Variant—PTC 
 - Rare variant of PTC 
 - Approximately 3% ofall PTC
Diffuse Sclerosis ... tumor cells • Squamoid ... Thyroid #Cancer #Pathology ... #Clinical #Gross ... #Microscopy