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Biomedical subjects

R G Nayak

Publications and source records attributed to R G Nayak.

12 recordsLinked to original sources
PubMed1985

Peripheral ameloblastoma.

The clinical presentation and histological features of peripheral ameloblastoma, occurring on the floor of the mouth in a 65-year-old male, are described. The lesion was surgically excised. All the classical features of peripheral ameloblastoma were seen in this patient.

Aged↗
PubMed1985

Extra-nasopharyngeal extension of juvenile angiofibroma.

Nasopharyngeal angiofibroma (NPA) is a highly vascular, infiltrative tumour that occurs exclusively in the nasopharynx of young males. It is of special interest on account of its serious complications, and the difficulties that are encountered at the time of treatment. Various surgical approaches have been mentioned for both naso- and extra-nasopharyngeal angiofibromas. But a massive extra-NPA involving the naso-spheno-oro-palato-maxillary-infratemporal region, orbit and cheek is difficult to treat adequately with any of the approaches so far described in the literature. In these cases, a more radical approach (constituting embolization and subsequent clamping or ligation of the external carotid artery followed by total maxillectomy) may be needed. These procedures will not only give a dry operative field but also adequate exposure to the different parts of the extension of the tumour, thereby facilitating complete removal without any risk of recurrence.

Adolescent↗
PubMed1984

A case of histoplasma posthitis.

The present report describes a case of disseminated histoplasmosis with involvement of the prepuce. Phimosis resulting from histoplasma posthitis is exceedingly rare and hence being documented.

Adult↗
PubMed1983

Osteosarcoma of facial bones.

Osteosarcoma, involving mandible and zygoma in 3 patients is presented and discussed; their clinical, radiological and treatment results are detailed. As this disease is uncommon in these bones, the difficulty in the management merits attention.

Adult↗
PubMed1981

Tissue-irritation potential of dilute formocresol.

Bacteriologic studies indicate that 50 percent formocresol in propylene glycol is an efficient bactericide. The tissue-irritation potential of this concentration was evaluated in rats. Assessment of the subcutaneous connective tissue reactions to 50 percent formocresol, 100 percent formocresol, and normal saline solution (as a control) indicates that formocresol, when diluted with propylene glycol, is significantly less irritating to the subcutaneous connective tissue of rats. The atraumatic implantation technique also seems to influence significantly the intensity of tissue reaction. Dilute formocresol deserves further study to evaluate its use in clinical endodontics.

Animals↗