simian line
simian crease
A dermatoglyphic pattern of a single deep transpalmar crease formed by fusion of proximal and distal palmar creases, which is classically seen in trisomy 21, but also in trisomies 13 and 9, and in foetal trimethadione syndrome. So called because of its verisimilitude to the same crease in monkeys.Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
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