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Biomedical subjects

N J Frootko

Publications and source records attributed to N J Frootko.

8 recordsLinked to original sources
PubMed1995

Diabetes mellitus and hearing loss.

A prospective hearing survey was performed in a sample of 102 diabetic patients. The hearing data were compared with the hearing thresholds of three control population groups. A significant difference was found in the average hearing thresholds between the diabetic patients and all of the three control populations. Diabetic patients have worse hearing threshold levels especially at low and mid frequencies (P < 0.001). There was also a correlation between the duration of diabetes and hearing loss. No significant correlation was found between the different stages of diabetic retinopathy and the degree of hearing loss.

Adult↗
PubMed1986

Verrucous carcinoma in the external auditory canal.

The apparent rarity of verrucous carcinomas of the ear is reflected by the fact that only three well-documented cases have previously appeared in the literature. However, in other instances the diagnosis of verrucous carcinoma may have been missed because of the unfamiliarity of many clinicians and pathologists with the morphologic characteristics of these lesions. We describe the first case of a verrucous carcinoma confined to the external auditory canal in which a positive diagnosis was only made histologically after local recurrence of what was initially diagnosed as a senile keratosis. The difficulties inherent in diagnosing this lesion and the necessity of close cooperation between the surgeon and pathologist if a diagnostic error is to be avoided are emphasized. Careful follow-up of all warty lesions of the external auditory canal and middle ear cleft is recommended.

Aged↗
PubMed1985

A scanning electron microscopy study of the interface between ceramics and bone.

By use of scanning electron microscopy (SEM), together with energy dispersive chemical analysis, a study has been made of the comparison of an in vitro method of assessing interface reactions between bone and ceramic implants with the naturally occurring changes seen in the rat ear model. Interface reactions between bone and two ceramic materials were examined following 4 wk in culture and 4 wk implantation. In both cases a gradual chemical change occurred at the calcium silicate surface during the fibrous growth onto the ceramic material. Gradual mineralization of the connective fibres was found at the interface of the calcium silicate material, whereas, in the case of alumina ceramic a connective fibrous bond had formed with no associated chemical change at the ceramic surface.

Animals↗
PubMed1984

Complications of sinusitis caused by Streptococcus milleri.

Complications of sinusitis caused by 'viridans' streptococci, mainly Streptococcus milleri, are described. The identification, bacteriology and pathogenicity of the organism are discussed and an approach to antimicrobial therapy outlined.

Abscess↗
PubMed1978

Oesophageal papillomata in the child.

This is a case report of a 6-year-old female child with asymptomatic multiple squamous papillomatosis involving the hypopharynx and the entire length of the oesophagus. Total spontaneous regression of the papillomata occurred within 2 years of presentation. Associated asymptomatic laryngeal papillomata were removed by suction diathermy under general anaesthesia. The diagnosis was confirmed by direct microlaryngoscopy, oesophagoscopy, barium swallow and histology. The laryngeal hypopharyngeal and oesophageal lesions were identical histologically and macroscopically.

Child↗