natiform skull
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Skull — The skull is a collection of bones which encase the brain and give form to the head and face. The bones of the skull include the following: the frontal, parietal, occipital, temporal, sphenoid, ethmoid, zygomatic, maxilla, nasal, vomer, palatine … Medical dictionary
Parrot sign — 1. ciliospinal reflex. 2. bony nodes on the outer table of the skull of infants with congenital syphilis, so that it has a hot cross bun or buttock shape; called also Parrot nodes, hot cross bun skull, and natiform skull … Medical dictionary