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Biomedical subjects

P Garrett

Publications and source records attributed to P Garrett.

33 records · Page 2Linked to original sources
PubMed1987

Intraoperative radiation therapy for advanced or recurrent head and neck cancer.

Between 1982 and 1984, we treated 28 patients with advanced head and neck cancer with surgery, combined with intraoperative radiation. All patients had squamous cell carcinoma. One patient had two separate sites treated and a second patient was treated on two occasions, allowing 30 sites for analysis. The overall survival for all patients treated was 67% at 1 year. Local failure occurred in 13% of those with close surgical margins and 25% of those with microscopic residual disease. With gross residual disease 100% had local failure. Patients with gross residual disease had significantly higher local failure than microscopic residual disease (p less than 0.02) or close surgical margins (p less than 0.01). Carotid blowout was the major treatment complication. We believe intraoperative radiation is an effective treatment for advanced or recurrent head and neck cancer when all gross disease has been resected.

Carcinoma, Squamous Cell↗
PubMed1986

Radiological assessment of aluminium-related bone disease.

Two hundred and fifty-nine radiological skeletal surveys were reviewed in 67 cases of end-stage renal failure. Fractures were identified in 16 patients, of whom 12 (17.9% of total) had aluminium-related bone disease. Moderate or severe fracturing osteopathy with more than five fractures not explained by trauma was 100% specific for aluminium intoxication. It is sufficient to perform radiological skeletal surveys in the assessment of renal osteodystrophy annually. They should include radiographs of the fingers, a lateral view of the lumbar spine and oblique views of the ribs. The primary aim of reporting on such surveys should be to grade the severity of fracturing osteopathy and of subperiosteal erosions.

Aluminum↗
PubMed1986

Aluminum-related bone disease. Correlation between symptoms, osteoid volume, and aluminum staining.

In order to correlate symptoms, osteoid volume, and aluminum deposition in bone, 46 methacrylate-embedded biopsy specimens from 26 hemodialysis patients were examined. Osteoid volume was measured using computer-assisted morphometric analysis, and aluminum was detected using the Aluminon stain. Positive staining for aluminum was present in biopsies from 21 patients. Osteoid volume did not correlate with duration of dialysis therapy or ingestion of aluminum hydroxide but displayed a logarithmic relationship with dialysate aluminum exposure. Patients with bone pain at the time of biopsy had a greater degree of hyperosteoidosis than asymptomatic subjects. Osteoid volume in patients with fractures and positive aluminum staining decreased on withdrawal from aluminum-rich dialysate. The Aluminon staining technic is a convenient method of confirming aluminum overload.

Aluminum↗
PubMed1984

HLA-A, -B and -DR antigens in IgA nephropathy.

Fifty-six Irish patients with IgA Nephropathy were typed for HLA-A and -B antigens. Forty-six were typed for HLA-DR antigens. The frequencies of these antigens did not differ significantly from the frequency in the general population. The influence of genetic factors in the pathogenesis of this disease remains uncertain.

HLA Antigens↗
PubMed1984

Primary radiation therapy for juvenile nasopharyngeal angiofibroma.

Evidence is presented of the effectiveness and relative lack of serious toxicity of external beam megavoltage radiation therapy (RT) as primary treatment for juvenile nasopharyngeal angiofibroma. The importance of careful radiological evaluation of tumor extent prior to irradiation is stressed, and only moderate dose RT is required. Fifty-five patients have been treated by RT and followed for from 3 to 26 years. Forty-four of 55 patients (80%) had permanent tumor control following a single course of 3000 cGy to 3500 cGy over 3 weeks. Surgical resection or a second course of RT controlled the tumor in all 11 patients in whom regrowth occurred. Angiofibromas involute slowly after RT so that 50% of patients still had visible masses in the nasopharynx 12 months after treatment, but only 10% had any visible abnormality 36 months after RT. Retreatment was necessary only if symptoms recurred, and continued follow-up showed that most asymptomatic nasopharyngeal masses resolved completely. Acute and late toxicity rates were low. Two patients developed tumors in the head or neck following RT. There was no significant clinical impairment of growth or endocrine function. A single course of external beam megavoltage radiation to 3000 cGy in 3 weeks is an effective first treatment for patients with juvenile nasopharyngeal angiofibroma.

Adolescent↗