polydactyly of a biphalangeal thumb
Polydactyly of a biphalangeal thumb or PPD1 is the most common form of preaxial polydactyly of fingers, a limb malformation syndrome, that is characterized by the duplication of one or more skeletal components of a biphalangeal thumb. Hands are preferentially affected (in bilateral), and the right hand is more commonly involved than the left.
MONDO:0017425
preaxial polydactyly of fingers
is_a
MONDO:0800066
polydactyly-syndactyly-triphalangism
is_a
PPD1
exact
polydactyly preaxial 1
related
polydactyly, preaxial type 1
exact
preaxial polydactyly 1
related
preaxial polydactyly type 1
exact