Pathnologic @pathnologic
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Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Simplex Virus Lymphadenitis ... • HSV-infected cells ... #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Paracoccidioides brasiliensis Lymphadenitis ... seen within giant cells ... #brasiliensis #Lymphadenitis ... #Pathology #LymphNode ... #Clinical #Microscopy
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
late phase HIV lymphadenitis ... Pattern C" in HIV Lymphadenitis ... #PatternC #Pathology ... #Microscopy #LymphNode ... #Clinical
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
Warthin-Finkeldey type giant cells ... Monocytoid B cells ... #PatternA #Pathology ... #Microscopy #LymphNode ... #Clinical
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... #SignetRing #Cell ... #Histiocytes #LymphNode ... #Pathology #Clinical
Squamous-Cell Carcinoma of the Tongue - Intraoral examination revealed a well-circumscribed superficial ulcer, with a homogeneous
Squamous-Cell Carcinoma ... examination revealed a well-circumscribed ... invasive squamous-cell ... carcinoma (Panel B) #Clinical ... #Pathology #Honc
On the left radiological pathological correlation of Langerhans cell histiocytosis in respectively nodular stage and early
of Langerhans cell ... #Clinical #Radiology ... #Pathology #CTChest
Glucagonoma-Associated Rash - The rash involved the arms, genitals, and buttocks and had progressed to the
tissue revealed a well-circumscribed ... resolve (Panel D) #Clinical ... #HONC #Derm #Pathology ... #Radiology #Glucagonoma
Perirenal Extramedullary Hematopoiesis - Magnetic resonance imaging of the abdomen, performed without the administration of contrast
hematopoiesis #cilnical ... #Radiology #Pathology ... #Honc #MRI #PerirenalExtramedullaryHematopoiesis