Comparison of Erythrocytosis
Features
cyanosis
PV
2nd absol
Relative
Heart/lung disease
splenomegaly
hepatomegaly
Red cell mass
EPO
Arterial O2 saturation
Leukocyte count
Platelet count
nRBCs
LAPA
Bone marrow
Serum B12
A
A
A
A
A
A
A
A
A
I
I (80%)
I (50%)
I (70%)
I
I
I
D
IE
HC
N
N
N
N
N
N
N
N
N
N
N
N
N
P (75%)
P (35%)
P
P
P
D
P
HC = Hypercellular
IE = Increased eryhtropoiesis
A
= absent I = increased P = present D = decreased N = normal
