Pathnologic @pathnologic
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Hypersegmented neutrophil in a case of acute myeloid leukemia.

Dysplastic neutrophils are typically hypolobated but can be
Hypersegmented neutrophil ... Dysplastic neutrophils ... Hypersegmented #neutrophils ... #AML #Clinical ... #Hematology #Pathology
Rouleaux formation is common in IgM gammopathy and may be particularly striking

Genevieve Crane, MD, PhD@evemariecrane

#Rouleaux #formation
Rouleaux formation ... evemariecrane #Rouleaux ... Clinical #Pathology #Hematology
A 37-year-old woman initially presented with pancytopenia and found to have leukopenia (2.1 × 103/μL) with
promyelocytic leukemia (APL ... showed hypogranular neutrophils ... In addition to APL ... , Auer rods in neutrophils ... Rods #AuerRods #APL
Plasma cell leukemia with extensive rouleaux formation. Aggressive disease & patients typically younger than other forms
with extensive rouleaux ... PlasmaCell #leukemia #rouleaux ... Clinical #Smear #Hematology
Acute promyelocytic leukemia (blood). Typical morphologic features are bilobed ("butterfly") nuclei with dispersed chromatin, subtle to
I see all of these ... promyelocytic #leukemia #APL ... #APML #Pathology ... #Hematology #Clinical
Autoagglutination should also be distinguished from “Rouleaux formation” wherein normal blood tends to form stacks on
distinguished from “Rouleaux ... Smear #Microscopy #Rouleaux ... #Formation #Hematology
Megaloblastic neutrophils in bone marrow.

So-called "giant bands" and "giant metamyelocytes" (blue circles) are 1.5-2 times the
Megaloblastic neutrophils ... Megaloblastic #neutrophils ... BoneMarrow #Smear #Hematology