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 ... • HSV-infected cells ... DennisOMalleyMD) #Herpes ... Lymphadenitis #HSV #Pathology ... Microscopy #Clinical #LymphNode
Acute Graft versus Host disease: vacuolar interface dermatitis w/ lymphoexocytosis, dyskeratotic keratinocytes, notable satellite cell necrosis.
Graft versus Host disease ... notable satellite cell ... after BMT like here ... #versus #Host #disease ... #Pathology #Microscopy
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
fibrosis (A) and well-formed ... seen within giant cells ... Lymphadenitis #Pathology ... #LymphNode #Clinical
Beautiful acanthocytes/spur cells in a patient with McLeod Syndrome. X-linked disorder characterized by reduced expression of
acanthocytes/spur cells ... expression of Kell ... granulomatous disease ... Syndrome #Smear #Pathology
Here are the morphological hallmarks of Rhabdomyosarcoma.

 - Broken arrow sign 

 - tad-pole rhabdomyoblasts
Here are the morphological ... rhabdomyoblasts - Wraith cells ... Rhabdomyosarcoma #Hallmarks #Pathology
Plasma cell leukemia with extensive rouleaux formation. Aggressive disease & patients typically younger than other forms
Plasma cell leukemia ... Aggressive disease ... primary plasma cell ... Smear #Hematology #Pathology
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
Here is a lymph ... Lymphadenitis #PatternC #Pathology ... #Microscopy #LymphNode
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
Olfactory Neuroblastoma Pathology

Morphology and other IHC clinched the diagnosis of olfactory neuroblastoma here. The tumor had
Neuroblastoma Pathology ... neuroblastoma here ... sustentacular cells ... Neuroblastoma #Pathology
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
Here is a lymph ... Warthin-Finkeldey type giant cells ... Monocytoid B cells ... Lymphadenitis #PatternA #Pathology ... #Microscopy #LymphNode