SEARCH · PubMed Health

Results for “NASOPHARYNGEAL NEOPLASMS”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 recordsLinked to original sources

PubMed1982

An immunohistochemical study of nasopharyngeal neoplasms using keratin antibodies: epithelial versus nonepithelial neoplasms.

Forty cases of nasopharyngeal neoplasia were analyzed using immunohistochemical staining employing keratin antibodies. Using this probe the tumors were classified as being keratin-positive or negative. In this study, all squamous cell carcinomas labeled with keratin antibodies whether they were classified as keratinizing or nonkeratinizing by usual staining methods. In contrast, lymphoid and mesenchymal tumors of the nasopharynx did not label with keratin antibodies. Thus, the presence of keratin proteins as detected by immunohistochemical means on paraffin-embedded tissues appears to be a useful, reliable, and sensitive method for aiding in the accurate diagnosis and classification of nasopharyngeal neoplasms.

Antibodies↗

PubMed1996

[Acute bilateral ophthalmoplegia and nasopharyngeal neoplasms].

The cranial nerves, due to its location, are not infrequently involved in the nasopharyngeal neoplasm evolutionary course. In this paper we describe two cases in which the neoplastic infiltration in both cavernous sinuses brought the appearance of an acute bilateral ophthalmolegia on. This symptomatology meant, in the first case, the onset of disease. In the second one, it was the reason of consultation. Later we discuss the topographic location of the damages in both cavernous sinuses considering the observed neurological shortcomings. Finally we approach a short revision of the causes of bilateral ophthalmoplegia found in literature, as well as an evaluation of different radiological diagnosis methods for this kind of damages.

Acute Disease↗

PubMed1979

Central nervous system changes complicating the use of radiotherapy for the treatment of a nasopharyngeal neoplasm in a diabetic patient.

A case is reported of a diabetic patient with a nasopharyngeal neoplasm who developed radiation induced brainstem damage even though irradiated at a conventional time-dose-volume relationship. The clinical course was correlated with autopsy findings which revealed radiation changes in the brainstem consisting primarily of vascular hyalinization with foci of infarction, edema, and demyelination. Atherosclerotic changes were conspicuously absent and therefore not the case of the alterations. The changes occurred three months after completion of therapy, which was more rapid than expected for radiation injury. It is hypothesized that diabetes may have predisposed the patient to this severe complication of standard therapy. More needs to be learned concerning the relationship between diabetes mellitus and radiation complications. Perhaps a modified time-dose relationship should be considered.

Adult↗

PubMed1997

[Secondary head and neck osteosarcoma following treatment of undifferentiated nasopharyngeal neoplasms (UCNT)].

Secondary tumours after radio and/or chemotherapy are mainly of hematopoietic (acute non lymphoblastic leukemia, non-Hodgkin lymphoma) or soft tissue lineage previously described most frequently after breast cancer and Hodgkin disease treatment with radio and/or chemotherapy. We report two cases of classical osteosarcoma's observed 9 and 3 years after treatment for UCNT with combined radiotherapy and alkylant-based adjuvant chemotherapy in one case and exclusive loco-regional irradiation in the second case.

Adult↗

PubMed1999

Temporal bone tumours in patients irradiated for nasopharyngeal neoplasm.

Radiation-associated tumours are rare complications of radiotherapy. This study seeks to highlight and discuss the clinically challenging problem of radiation-associated tumours (RATs) in the temporal bones of seven patients previously irradiated for nasopharyngeal neoplasm. Seven patients (six males and one female) with radiation-associated temporal bone tumours are presented (five squamous cell carcinomas, one osteogenic sarcoma and one chondrosarcoma). The initial nasopharyngeal disease for which radiotherapy was indicated was nasopharyngeal carcinoma (six patients) and nasopharyngeal lymphoma (one patient). The latency period between radiotherapy and presentation of temporal bone tumours ranged from five years to 30 years with a mean of 12.9 years. All the patients underwent surgical tumour resection. Three patients had post-operative radiotherapy and one patient underwent pre- and post-operative chemotherapy. Two patients died from the disease within three months of treatment with one patient surviving 36 months at the time of writing. One patient died from an unrelated medical condition three months after surgery. With refinement in radiotherapy techniques and the resultant increase in patient survival, there may be more patients with radiation-associated tumours in the future. It remains imperative for clinicians to be vigilant when patients previously irradiated for nasopharyngeal carcinoma present with otological symptoms as the key to the successful management of this condition lies in the early detection and expedient treatment of this difficult disease.

Aged↗

PubMed1967