Screening: reasons to be cautious.
Screening: reasons to be cautious.
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筛查:需要谨慎的理由。
DOI:
10.1136/bmj.306.6887.1222
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发表时间:
1993
影响因子:
--
通讯作者:
W. Holland
中科院分区:
文献类型:
--
作者:
W. Holland
outcome in the limb and the effect of Homer's syndrome (which should be a minimal risk). Dorsal sympathectomy may be performed by various "open" operations. The complications of open operations include Homer's syndrome, incomplete denervation ofT3 and T4 segments, contusion of the brachial plexus, vascular injury, recurrent laryngeal nerve paralysis, and cosmetic problems. These complications outweigh the potential benefits, and many doctors consider open operation to be out of date. The recent development of minimally invasive techniques, which have included percutaneous phenol injection6 and percutaneous radiofrequency ablation7 guided by computed tomography, have provided safer alternatives, but long term effects are unknown. Currently, the most commonly used minimally invasive technique is endoscopic transthoracic sympathectomy,8 which, for the first time, offers a simple and effective treatment for those disabled by severe localised upper limb hyperhidrosis.9-2" The original technique was described well before laparoscopic cholecystectomy but has gained in popularity after the advances in all types of laparoscopic surgery. The first international conference devoted entirely to this operation takes place later this year. The cosmetic result is very good. There is little postoperative pain, and patients need to stay in hospital for less than 48 hours. Bilateral sympathectomies can be carried out at the same operation. Long term complications are similar to those of conventional dorsal sympathectomy, and patients should be warned of these risks. The commonest is compensatory sweating, which may occur in 37-75% of patients.10 We do not know how to treat this unfortunate consequence, and selecting only severely disabled patients for surgery is essential. If the upper limbs are only mildly affected severe postoperative hyperhidrosis of the trunk, though uncommon, may be even worse. Gustatory sweating is also possible but is only a minor nuisance. Intercostobrachial neuralgia may occur, but Homer's syndrome should be rare. Long term studies of recurrence rates are awaited; for conventional sympathectomy they range from zero to 5%. Endoscopic sympathectomy is an appreciable advance in the treatment of severe upper limb hyperhidrosis and is the surgical treatment of choice. It may have a role in other conditions, but there is a danger that the operation will be recommended even when sympathectomy is of uncertain benefit-as in critical ischaemia and sympathetic dystrophyor when it is known to have only a transient effect-as in vasospastic disease. Careful selection of patients (bearing in mind the lessons learnt from open sympathectomy) and endoscopic technique offer immediate benefit with minimum risk.