Mild calcification: The inion, occipital tuberosity or external protuberance, is the most prominent projection of the occipital bone at the posterioinferior (lower rear) part of the skull. The ligamentum nuchae and trapezius muscle attach to it. Mild degenerative changes may represent more exaggeration or spur or increased soft tissue calcification in the area.
Answered 12/10/2013
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