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Biomedical subjects

J Kronenberg

Publications and source records attributed to J Kronenberg.

At least 91 records · Page 5Linked to original sources
PubMed1991

Cerebrospinal fluid otorrhea treated by extended subtotal petrosectomy with obliteration.

Extended subtotal petrosectomy as a treatment for stubborn cerebrospinal fluid (CSF) otorrhea is presented. Nine patients were successfully operated on by this technique, all previously having undergone surgery for brain or base of skull lesions, other interventions used had failed to seal the fistula. The retrosigmoid cells, facial cells, and internal auditory canal were found in our study to be the most commonly involved during pervious neurosurgery and so constituted the usual path for CSF leakage. Total exenteration of middle ear and mastoid cell tracts, skeletization of sigmoid sinus, jugular bulb and facial nerve, drilling out of the semicircular canals, vestibulum, and cochlea, and skeletization of the internal auditory canal are the main steps of this approach.

Journal Article↗
PubMed1991

Severe hypophosphataemia during binge eating in anorexia nervosa.

A patient presented with severe hypophosphataemia that had been precipitated during binge eating. It was corrected by restricting the binges, and by hyperalimentation through a duodenal tube together with intravenous supplementation with sodium phosphate for a short period. Phosphate concentrations should be monitored in patients with severe anorexia complicated by bulimic episodes.

Adolescent↗
PubMed1991

Blast injury of the ear.

The course of middle ear injuries secondary to blast effect was evaluated in 147 soldier-patients (210 ears) during the years 1967-1986. All perforations were in the pars tensa of the tympanic membrane. Ossicular chain interruption (11 ears) was associated mainly with dislocation of the incudo-stapedial joint. Mixed-type hearing loss was most prevalent (37%). Spontaneous closure occurred in 155 ears (73.8%), most of them (65.5%) within a 3-month period. Seven ears (3.3%) developed simple chronic suppurative otitis media; in 10 (4.8%), an invasive cholesteatoma developed, and in 6 others (2.8%), epithelial pearls were encountered behind an intact eardrum. Thirty-two patients were treated by immediate patching of the perforated drum, with an 84% rate of spontaneous closure; no cholesteatoma developed among this group, emphasizing the need for immediate patching. Tympanoplasty is recommended 1 year following the injury, and a 4-year follow-up period for detection of late complications is also recommended.

Adolescent↗
PubMed1990

[Decompression of the endolymphatic sac].

Preliminary results in 8 patients with Meniere's disease who underwent decompression of the endolymphatic sac in the past 3 years were good. There was improvement in general disability, and tinnitus control in 87.5% and stabilization of hearing in 62%. The single complication was dead ear in 1 patient. These results are in the acceptable range and encourage continuation of this operation.

Adult↗
PubMed1990

Conservative management of adult epiglottitis.

A 10-year retrospective study of 30 adults suffering from acute epiglottitis is reported. Two clinical forms of onset were noted: gradual and accelerated. Abscess formation was present in 27% of cases. None of the patients required intubation or tracheotomy. In contrast to the accepted interventionist approach in children, conservative management in adults is recommended.

Abscess↗
PubMed1989

[Blast injury of the ear].

147 soldiers, in whom 210 ears were blast-injured, were studied retrospectively during 1967-1986. The nature of eardrum perforations, hearing impairment, complications, changes over the course of time and different modes of treatment were reviewed. In 92.8 of the ears the perforation was up to half of the eardrum surface, most significantly of the lower part of the drum. In 75% the perforation closed spontaneously: in 40% within a month, in 59% within 2 months and in 73% within a year. Most had impaired hearing, of whom 74% had sensorineural or mixed hearing loss; 60% complained of tinnitus and/or vertigo. In 13% purulent discharge had accompanied the perforation and in 8% a cholesteatoma had developed 1-4 years after injury. The recommended treatment of blast injury is early patching of the perforation and surgical exploration a year later in cases with residual conductive hearing loss or cholesteatoma.

Blast Injuries↗
PubMed1989

Sialadenoma papilliferum of the parotid gland.

Sialadenoma papilliferum is a rare, benign exophytic tumour of salivary glands. The preferred site of this tumour is usually the hard palate. A case of sialadenoma papilliferum occurring in the parotid gland of a 49-year-old man is presented; only one such case has been previously described.

Humans↗
PubMed1988

Peritonsillar abscess in children and its indication for tonsillectomy.

38 children aged 1-15 years treated for peritonsillar abscess (PTA) between 1976 and 1986 have been reviewed. The patients were divided into those with a history of recurrent tonsillitis prior to developing PTA (T+) (10 patients = 26.3%) and those without such history (T-) (28 patients = 73.4%). 19 patients were surgically drained, 2 abscesses ruptured spontaneously, 2 patients were treated by repeated needle aspirations and 15 patients were treated by medication only. Neither the pre-PTA history (T+ versus T-) nor the mode of treatment during the acute event showed any significant differences in comparing the recurrency rate of PTA or tonsillitis. Therefore, it seems that a single event of PTA among pediatric population should not be considered an indication for tonsillectomy.

Adolescent↗
PubMed1988

Pleomorphic adenoma arising in accessory salivary tissue with constriction of Stensen's duct.

Accessory salivary gland tissue is well recognized and is found in 21 per cent of the population. Tumours of the accessory salivary tissue are rare and comprise only 1 per cent of all parotid gland tumours. A pleomorphic adenoma of Stensen's duct is described. A circular constriction of this duct by the tumour with retention of saliva in the parotid gland was observed.

Adenoma, Pleomorphic↗
PubMed1986

The vascular pattern of the endolymphatic sac in the human embryo.

The venous vascular anatomy of the endolymphatic sac in human embryos was examined. The endolymphatic sac was found to be covered by sinusoid-like blood vessels arising from the sigmoid sinus. A rich and extensive capillary network was present on the epithelial surface of the endolymphatic sac. Connections between this capillary bed and the vein in the paravestibular canaliculus were seen. The blood of the endolymphatic sac can therefore drain either into the vein of the vestibular aqueduct in the paravestibular canaliculus or directly into the sigmoid sinus. The vessels lying on the endolymphatic sac are thin-walled and irregular. The endothelial cells lies in direct contact with the epithelial cells of the endolymphatic sac. The reduction of the dense capillary bed in the young embryo to only a few vessels in the order embryo is described.

Capillaries↗
PubMed1986

Histology of the endolymphatic sac of the rat ear and its relationship to surrounding blood vessels: the "endolymphatic glomerulus".

Histologic and histochemical studies of the endolymphatic sac of full-term rat fetuses were undertaken to clarify the anatomy of the endolymphatic sac, and the mechanism of endolymph circulation and regulation. Hitherto undescribed structure enveloping the sac with blood vessels extending from the sigmoid sinus resembling the kidney glomerulus was seen. This endolymphatic "glomerulus" is believed to provide a means of active exchange of water and electrolytes between blood vessels and the endolymphatic sac.

Animals↗