Japanese

SCLEROTIC CHANGES OF THE PTERYGOID PROCESS: A RADIOLOGICAL STUDY Toshitaka Iinuma 1 pp.453-460
Published Date 1979/6/20
DOI https://doi.org/10.11477/mf.1492208916
  • Abstract
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 Sclerotic changes (differences in the radiolucency between the right and left pterygoid processes) were investigated using posterior-cut PA polytomography. The paranasal lesions in this study included 15 cases of maxillary cancer, 20 unilateral sinusitis, 27 bilateral chronic sinusitis, 30 postoperative cysts of the maxilla, 3 caseous sinusitis, 4 maxillary papilloma, and 2 maxillary sarcoma. The sclerotic changes were seen in 60% of maxillary cancer, 75% of unilateral sinusitis, 25.9% of bilateral chronic sinusitis, 20% of post-operative cysts of the maxilla, all cases of caseous sinusitis, all cases of maxillary papilloma,and 50% of maxillary sarcoma. Both sex and average age were not related to the change. Among the radiological findings of the paranasal sinuses, diffuse opacity of the maxillary sinus showed highest coincidence (89.7%). Among the findings of the nasal meati, closure of the middle meatus showed highest coincidence (77.3%). The sclerotic reactions were seen in the other areas as the ethmoid-maxillary plate, inferior orbital wall, perpendicular plate of the palatine bone, and the middle cranial base, and the last one showed the highest coincidence (81.8%) of the sclerotic changes. The sclerotic reaction of the pterygoid process was caused primarily by lesions in the maxillary sinus filled either with secretion or soft tissue. This reaction was also one of the important radiological findings seen in maxillary cancer.


Copyright © 1979, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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