We report a prospective, controlled trial to assess temporomandibular joint (TMJ) dysfunction following the use of a Boyle-Davis mouth gag during tonsillectomy. TMJ function was evaluated in patients undergoing tonsillectomy and a control group undergoing nasal surgery preoperatively and 6 weeks postoperatively. The main outcome measures were symptoms and signs of TMJ dysfunction and interincisal distance. A mean reduction of 0.89 mm in interincisal distance (P < 0.01) was noted postoperatively in the tonsillectomy patients. There was no statistically significant reduction of interincisal distance in patients undergoing nasal surgery. There was a statistically significant reduction in interincisal distance in the post-tonsillectomy patients, caused by fibrous healing of the tonsillar bed or fibrous ankylosis of the TMJ.
Out of the 27 cases, 15 had evidence of histological invasion of thyroid cartilage. The most specific criterion to predict thyroid cartilage involvement was the presence of tumour on both sides of the cartilage (specificity of 91 per cent, sensitivity of 66 per cent). Combining two criteria increased both the sensitivity and the specificity to 86 and 91 per cent, respectively.
More than two-thirds of the tumours were pleomorphic adenomas. The majority of these were located in the body and not in the tail of the parotid gland. In 50 per cent of these cases, the tumour was in close association with the two major divisions of the facial nerve. In the case of Warthin's tumours, 47 per cent were located in the tail, below the lower division of the facial nerve.
Early diagnosis helps to prevent morbidity and even mortality. This article highlights how difficult and important it is to make an early diagnosis of common variable immunodeficiency syndrome. Early diagnosis will only be made by increased awareness of this condition.
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