obsolete congenital absence/hypoplasia of thumb (obsolete MONDO:0017447)
OBSOLETE. Congenital absence/hypoplasia of thumb is a rare developmental defect during embryogenesis characterized by underdevelopment of the thumb, ranging from a slight decrease in thumb size to complete absence of the thumb. The malformation may occur isolated, combined to other defects of the hand or upper limb, or as part of a multiple congenital anomaly syndrome.
thumb hypodactyly
exact
thumb oligodactyly
exact