has part has part characteristic of inheres in has modifier Prominent occiput Protruding back of the head UMLS:C4280652 Protruding occiput Prominent posterior cranium HP:0004489 HP:0000269 Prominent back of the head Prominent back of the skull Prominent posterior skull UMLS:C1853737 Increased convexity of the occiput gives an appearance of prominence. There are no objective measures for convexity of the occiput, and evaluation depends heavily on the experience of the observer. This finding may or may not be accompanied by Dolichocephaly, but this should be coded separately. Increased convexity of the occiput (posterior part of the skull). Prominent posterior head Abnormal shape of the occiput abnormal prominent occipital bone