Achondrogenesis, type II Catalina Valencia, MD, José Luis Duque, MD Article Published: May 31, 2002 Medicina Perinatal, Bogota, Colombia This is a 23 week fetus with achondrogenesis type II. The head with a cystic hygroma. The hypomineralization of the spine.  The legs and feet:  The arms and hands: Note the micromelia in the 3D image. Discussion Board Start a discussion about this article Add to Favorites Favorite