Pathnologic @pathnologic
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Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
cold agglutinin disease ... individual’s red blood ... erythrocytes) by his ... #Clinical #Path ... #Blood #Smear #Microscopy
Red cell autoagglutination is the process whereby red cells clump together forming aggregates. This is seen
cold agglutinin disease ... individual’s red blood ... erythrocytes) by his ... #Clinical #Path ... #Blood #Smear #Microscopy
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
lymphadenitis ( ... Lymphadenitis: ... #Lymphadenitis ... PatternC #Pathology #Microscopy ... #LymphNode #Clinical
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Simplex Virus Lymphadenitis ... paracortex • HSV-infected ... Simplex #Virus #Lymphadenitis ... #HSV #Pathology ... #Microscopy #Clinical
Here is another peripheral blood smear demonstrating changes with iron deficiency anemia. Note the increased zone
another peripheral blood ... iron deficiency anemia ... #Clinical #Path ... #Microscopy #PeripheralBloodSmear ... #BloodSmear #Anemia
Peripheral blood findings in microangiopathic hemolytic anemia.  DIC is a clinical and laboratory diagnosis, not
Peripheral blood ... microangiopathic hemolytic anemia ... DIC is a clinical ... Microangiopathic hemolytic anemia ... Pathology #Smear #Microscopy
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
lymphadenitis ( ... Lymphadenitis ... #EarlyPhase #Lymphadenitis ... PatternA #Pathology #Microscopy ... #LymphNode #Clinical
Pathology - Castleman disease. 

Mediastinal mass in a younger woman.

Histologic Features of Castleman disease, hyaline vascular
Pathology - Castleman disease ... in paracortical blood ... #Castleman #disease ... Pathology #Smear #Microscopy ... #Clinical
Autoagglutination should also be distinguished from “Rouleaux formation” wherein normal blood tends to form stacks on
Autoagglutination ... wherein normal blood ... #Clinical #Pathology ... #Blood #Smear # ... Microscopy #Rouleaux
A – cabot ring, B – Howell-Jolly Body

What are Cabot’s rings?
- They are delicate threadlike inclusions
inclusions in the red blood ... the peripheral blood ... /megaloblastic anaemia ... #Clinical #Pathology ... #Microscopy #BloodSmear