Pathnologic @pathnologic
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Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
KyleBradleyMD "Pattern ... infection) - "Pattern ... phase between pattern ... #Pathology #Microscopy ... #LymphNode #Clinical
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Lymphadenitis #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
A normal peripheral blood smear indicates the appropriate appearance of red blood cells, with a zone
A normal peripheral ... #Clinical #Path ... #Microscopy #PeripheralBloodSmear ... #BloodSmear #Normal
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
lymphadenitis (so-called "pattern ... KyleBradleyMD "Pattern ... Lymphadenitis #PatternA ... #Pathology #Microscopy ... #LymphNode #Clinical
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
staining confirmed a normal ... and meatball” pattern ... Clinical #Derm #Pathology ... TineaVersicolor #Rash #Microscopy
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
Normal Bone Marrow
#Clinical #Path #Microscopy #BoneMarrow #Normal #Marrow
Normal Bone Marrow ... #Clinical #Path ... #Microscopy #BoneMarrow ... #Normal #Marrow
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
Autoagglutination should also be distinguished from “Rouleaux formation” wherein normal blood tends to form stacks on
formation” wherein normal ... dilution with normal ... #Clinical #Pathology ... #Blood #Smear #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