異常茎状突起症に関する研究
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Part I.Clinical observations on the abnormal styloid process.Thirteen cases were observed. The findings were as follows:1) 69% were belonged to females. 12) 69% was observed on the left side, while 15% on the bilateral sides.3) The most prominent subjective symptom was pharyngeal tenderness which was found in all cases. Other complaints were uncomfortable feeling in the pharynx (46%), neck pain (38%), stiff shoulders (38%) and pharyngeal aches (15%). Objectively all the processes were palpable in the lateral side of the pharynx.4) Five patients, of which one had bilateral involvement, were cured by peroral resections, and two others improved by conservative measures.Part II.Morphological observations of the styloid process.The observations were performed on the styloid processes of necropsy skull specimens.1) 54% showed "Curved Form" The next common shape was "Straight Form", and "Bending Form" represented 8.1%.2) The average length of the styloid processes was 24.1mm in the virtual and 15.7mm in the apparent, and showed the increase of the length following to the age up to the fourth decade of life.3) The forward angle was 26°51, the medial angle 28°20.Part III.Roentgenography of the styloid process.Roentgenological studies of skull specimens revealed that the best view of the process throuth the sagittal direction could be obtained with the aural vertical plane (which is perpendicular to the Frankfort horizontal plane and crossing the center of each opening of external auditory canal) held parallel to the film and a central X-ray beam projected vertically through the point where the maxillary outline meets the parasagittal plane passing 6mm inside of the lateral orbital rim.Part IV.Roentgenological stedies of the cases of the abnormal styloid procss.Radiological findings of 10 cases examined from the standpoint of the observations described in Parts II and III were as follows:1) Thare was no abnormality in the over-all morphology of the processes.2) In each case the length of the process exceeded the value of normal individuals by 23mm in males and 19mm in females on the average.3) The correlation between the angle and length of the process seemed quite important for the occurrence of the complaints, and there were three cases in which the angles out of proportion to the length of the process were detected.
- 社団法人 日本耳鼻咽喉科学会の論文