Pathnologic @pathnologic
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Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... histiocytes in ... #SignetRing #Cell ... #Histiocytes #LymphNode ... #Pathology #Clinical
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Herpes Simplex Virus ... • HSV-infected cells ... DennisOMalleyMD) #Herpes #Simplex ... Pathology #Microscopy #Clinical ... #LymphNode
Diffuse Sclerosis Variant—PTC 
 - Rare variant of PTC 
 - Approximately 3% ofall PTC
Diffuse Sclerosis ... • Carcinoma cells ... around the tumor cells ... PTC #Papillary #Thyroid ... Cancer #Pathology #Clinical
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
Hobnail variant ... cytoplasm, hobnail cells ... PTC #Papillary #Thyroid ... Carcinoma #Pathology #Clinical
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
Oncocytic Variant ... every oncocytic thyroid ... tumor is a Hurthle cell ... for oncocytic variant ... Pathology #Microscopy #Clinical