Seventy-four verified cases of cerebral abscess seen in the Regional Neurosurgical Centre at Addenbrookes Hospital, Cambridge between 1965 and 1987 were reviewed. During that time no decline in incidence or change in the associated mortality was found to occur. ENT disease, taken as a whole, represented the most common source (40%) while acute frontal sinusitis (23%) proved to be the most common single underlying cause. Cerebral abscesses of sinogenic origin in particular were diagnosed late, with a deteriorating conscious level being the precipitating event in 94% of cases. Over 80% of such patients had presented initially to a non-ENT department with acute frontal headache where neither the underlying frontal sinusitis nor the developing intracranial complication had been suspected. These findings might explain why the incidence and mortality associated with cerebral abscesses of sinogenic origin, have changed little in the last 25 years despite improvements in diagnostic imaging, surgical technique and antibiotic therapy. We recommend that the diagnosis of acute frontal sinusitis be considered in any patient who presents with acute frontal headache, particularly if symptoms are unilateral. Furthermore, we stress that early confirmation of intracerebral complications by computerized axial tomography (CT) scanning continues to depend entirely upon an early clinical diagnosis which should result from a high level of clinical suspicion in patients who develop intracranial symptoms in the presence of known acute frontal sinus infection.
The prevalence of sensorineural hearing loss, measured by pure tone audiometry, was determined in 66 patients with chronic renal failure and threshold changes following haemodialysis were measured in 31 patients. The incidence of hearing loss was 41% in the low, 15% in the middle and 53% in the high frequency ranges respectively. No correlations with weight changes, haematocrit, metabolic bone disease or ototoxic drug history were found. Of 62 ears studied, 38% had a decrease in low frequency threshold after dialysis and 9% had an increase. Threshold in 22/31 ears with pre-existing low frequency loss altered after dialysis with little change in other frequencies and no correlation with weight changes. In conclusion, we find a high incidence of low and high frequency hearing losses in chronic renal failure patients. Fluctuation in low frequencies with dialysis is common. Possible mechanisms include treatment induced changes in fluid and electrolyte composition of endolymph.
The ‘Taiwan tube’ is an inexpensive pneumatic artificial larynx made in Taiwan. The device, which is a tracheo-oral shunt containing a resonator, is popular with laryngectomees in Hong Kong. This paper reports its use and describes its working dynamics which compare favourably with those of other forms of voice restoration.
With the increasing median age of survival in the UK, there is an increased burden on the provision of medical and surgical care to the population. The
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