Injuries and diseases of the jaws . ospital Museum (II. 160). When it arises from the alveolus, a fibrous tumour mayencroach on both the facial and the palatine surfaces of thejaw, crushing in the antrum although not involving its in-terior. Of this a good example is seen in a preparation(104-8) in the College of Surgeons, of an upper jaw removedby Mr. Liston. Here the tumour, which is affixed to thealveolar border, near the molar teeth, extends inwards so asto cover the palatine portion of the jaw, and outwards soas to conceal all the bicuspid and molar teeth, with theexception of the last. T
Injuries and diseases of the jaws . ospital Museum (II. 160). When it arises from the alveolus, a fibrous tumour mayencroach on both the facial and the palatine surfaces of thejaw, crushing in the antrum although not involving its in-terior. Of this a good example is seen in a preparation(104-8) in the College of Surgeons, of an upper jaw removedby Mr. Liston. Here the tumour, which is affixed to thealveolar border, near the molar teeth, extends inwards so asto cover the palatine portion of the jaw, and outwards soas to conceal all the bicuspid and molar teeth, with theexception of the last. The walls of the antrum are pressedinwards, but its interior is healthy. The patient was awoman, thirty years old, and the tumour was observed fouryears before its removal, which was successful. On theother hand, fibrous tumours, though commencing in thealveolus, may secondarily involve the antrum when theyhave attained considerable size, producing complete absorp-tion of its walls, and projecting into the nose and through Fig. 108,. the palate. Of this a preparation in the College of Sur-geons Museum (lO^G), of an upper jaw, also removed by 224 TUMOURS OF THE UPPER JAW. Mr. Listen, affords a good example. Here tlie patient wasonly twenty-one, and the growth first appeared on theouter side of the gum of the left upper jaw four years beforethe operation. It was cut off six months after its first ap-pearance, but returned, and eighteen months after wasremoved, with a portion of the alveolar process, but reap-peared in a few weeks. Fig. 108, from Listons PracticalSurgery, shows the growth after its removal, and figs. 109and 110 show the patient before and after the may be noticed here, as in the case of a large epulis,that disease of the upper jaw often closely resembles, exter-nally, a tumour of the inferior maxilla. Fig, 109, Fio. 110.
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