Congenital
Hypoplasia - 2
Thrombocytopenia-absent
radii (TAR):
Clinical features:
Thrombocytopenia in
neonates
Absence of or extreme
hypoplasia of radial bones of forearms
Absent, short, or
malformed ulnae
Cardiac lesions
High incidence of
leukemoid reaction
Platelet features:
Insufficient dense
granules in platelets
Platelet counts:
10.0 – 30.0 x 109/L