The occipitomastoid suture joins the occipital bone and mastoid portion of the temporal bone. The mastoid notch is a deep groove between the mastoid process and the styloid process. Specific examples include subdural, mastoid, pericardial and pleural effusions. Also isolated from sinuses, teeth and mastoid. Reference (inverting) electrodes can be placed on the contralateral earlobe, mastoid, or ear canal. Pneumatic spaces include the paranasal sinuses and some of the mastoid cells. It is also filled with sinuses, or mastoid cells. When she was two, her eardrum was permanently damaged during a mastoid operation. The mastoid process is absent or rudimentary in the neonatal skull. This angulation prevents overlap of images of two mastoid bones. The base is fused with the internal surfaces of the squamous and mastoid parts. Schuller's view is a lateral radiographic view of skull principally used for viewing mastoid cells. Some openings occur in the mastoid bone. At age 10, Bill developed a severe mastoid ear infection. Posteroinferior to the squamous is the mastoid part.