type V acrocephalosyndactyly

n.
  1. Acrocephalosyndactyly with broad short thumbs and great toes, often with duplication of the great toes and syndactyly of other digits.Pfeiffer syndrome
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.