Primary carcinoma of the female urethra. Results of radiation therapy.

Background: This retrospective study analyzed treatment outcomes, patterns of failure, and complications of treating nonmetastatic primary carcinomas of the female urethra with radiation therapy.

Methods: Ninety-seven women with this uncommon malignancy were treated with radiation therapy at the University of Texas M.D.

Evaluation of the dose for postoperative radiation therapy of head and neck cancer: first report of a prospective randomized trial.

Purpose: This study was designed to determine in a prospective randomized trial the optimal dose of conventionally fractionated postoperative radiotherapy for advanced head and neck cancer in relation to clinical and pathologic risk factors.

Methods And Materials: Between January 1983 and March 1991, 302 patients were enrolled on the study. This analysis is based on the first 240 patients entered through September 1989, of whom 221 (92%) had AJC Stage III or IV cancers of the oral cavity, oropharynx, hypopharynx, or larynx.

A child with valproic acid-associated carnitine deficiency and carnitine-responsive cardiac dysfunction.

Valproic acid enhances renal losses of carnitine esters and leads to decreased plasma free carnitine concentrations in many patients receiving valproic acid therapy. However, decreased serum carnitine levels are of unclear pathologic significance, and most children manifest no symptoms of carnitine deficiency. We report a child with valproic acid-associated carnitine deficiency who had severe cardiac dysfunction develop that resolved with carnitine replacement therapy.

The influence of ras oncogene expression on radiation response in the Rat-1 cell.

We evaluated the effect of H-ras oncogene expression on resistance to ionizing radiation in cultured rat fibroblasts. The Rat-1 cell line, and two Rat-1 derivatives, MR4 and MR7, carrying a ZN-regulatable metallothionein-rasT24 fusion gene were used to study the effects of the ras oncogene on radiation sensitivity. Cells were irradiated with a 137Cs source (450 cGY/min) in the presence or absence of ZnSO4.

Carcinomas of the nasal cavity.

Between 1969 and 1985, 45 patients with carcinomas of the nasal cavity proper received curative treatment. Thirty patients had squamous cell carcinoma, one had undifferentiated carcinoma, 9 had adenocarcinoma, and 5 had adenoid cystic carcinoma. Eighteen patients were treated with definitive radiotherapy (interstitial brachytherapy in 5 and external beam therapy in 13 patients), and 27 received surgery and radiotherapy.

Fast-scan magnetic resonance imaging of fetal anomalies.

Objective: To identify those congenital fetal anomalies, previously identified by ultrasound scanning, in which fast-scan magnetic resonance imaging (F-SMRI) would give additional information for the perinatal management of the infants.

Design: Observational clinical study.

Setting: Hospital Department of Obstetrics and Gynaecology/Resonance Research Centre.

Phosphorus metabolites in the human placenta estimated in vivo by magnetic resonance spectroscopy.

Normal human placental metabolism has been studied in vivo by image localised 31P magnetic resonance spectroscopy in 13 women with anterior placentas; five, however, were too fat for useful spectral signals to be obtained. Magnetic resonance spectra of good quality which were considered to have arisen from the placenta were obtained from seven women with uncomplicated pregnancies (median gestational age 35 weeks, range 28-39). One other woman had a twin pregnancy in which one fetus had died a few days before.

Relationship between burnout and performance.

This paper seeks to clarify the nature of the relationship between burnout and both perceived and actual performance. A sample was chosen for whom a clear and objective measure of actual performance was available. This was a group of 95 mid-career MBA students, for whom examination scores were obtained.

Fast-scan magnetic resonance imaging in fetal visualization.

Magnetic resonance imaging has potential as an imaging technique in obstetrics. Its application has been limited by the amount of image degradation that occurs as a result of fetal movement during the long imaging times. By use of a fast-scan imaging technique good images are obtained of fetal anatomy in 3 to 14 seconds per image, depending on the setting used.

Outcome and patterns of failure following limited-volume irradiation for malignant astrocytomas.

Between January 1982 and June 1986, 60 consecutive patients with high-grade astrocytomas [39 glioblastoma multiforme (GBM), 21 anaplastic astrocytoma (AA)] were treated with radiation therapy after biopsy (13 patients) or resection (47 patients). Fifty-three patients were treated with limited-volume irradiation, and seven patients received whole-brain irradiation. The mean tumor dose was 65.

Results of a changing treatment philosophy for children with stage I Hodgkin's disease: a 35-year experience.

Over the last four decades, significant changes have occurred in the management of childhood stage I Hodgkin's disease. Between 1949 and 1984, 50 children, ages 4 to 16 years, were treated for stage I Hodgkin's disease at The University of Texas M. D.

Assessment of fetal well-being with magnetic resonance.

The application of magnetic resonance techniques in the assessment of fetal growth, fetal growth patterns and fetal health was assessed. Eighty-four sets of fetal images were obtained using a fast-scan magnetic resonance imaging technique. Measurements were made of fetal subcutaneous fat thickness, uterine cavity length and width, fetal and uterine cross-sectional areas and fetal volume.

Massive histamine release in a patient with systemic mastocytosis.

We have measured plasma histamine concentrations, systemic vascular resistance, cardiac output and arterial pressure during laparotomy in a patient with systemic mastocytosis. The patient developed vasodilation and hypotension during surgery, associated with a massive increase in plasma histamine concentration.

Superior sulcus tumors: treatment selection and results for 85 patients without metastasis (Mo) at presentation.

Superior sulcus (Pancoast) tumors (SST) are uncommon carcinomas of the lung with distinctive failure patterns and a somewhat more favorable prognosis than other sites of lung cancer. The most effective use of surgery (S), radiation (R), and chemotherapy (C) is not resolved. Most reported series include patients treated before the era of computed tomography (CT).

The effects of a simulated acid precipitation on leaf litter quality and the growth of a detritivore in a buffered lotic system.

The effects of a simulated acid rain on leaf litter quality and the growth of a detritivore in a buffered lotic system were investigated. Exposure of Populus balsamifera L. saplings to a simulated acid precipitation prior to leaf abscission resulted in significant decreases in foliar nitrogen content and increases in carbon: nitrogen ratios.

Fetal cystic hygroma colli: antenatal diagnosis, significance, and management.

Twenty-four cases of fetal cystic hygroma colli were diagnosed by ultrasound. In two patients, the diagnosis was not confirmed at autopsy. Ten of these were cases of Turner's syndrome, one was a case of Turner's mosaicism, three had other aneuploidies, four had normal chromosomes, and six had a failed chromosome culture.

Intravenous labetalol and intravenous dihydralazine in severe hypertension in pregnancy.

The effect of intravenous infusion of labetalol and of dihydralazine in increasing doses was compared in 12 women with severe hypertension in pregnancy. In 5 our of 6 women labetalol produced a smooth, progressive fall in blood pressure to normal levels with minimal side effects. In 2 our of 6 women on dihydralazine the blood pressure control was satisfactory but in the remaining 4 patients treatment had to by discontinued because of unpredictable, sudden falls in blood pressure.

Fetal swallowing and voiding in relation to hydramnios.

Fetal swallowing and voiding were measured using colloidal gold and an ultrasonic scanner, respectively. Subjects in the study were in their 38-40th week of pregnancy. Cases were divided into 3 groups: normal, hydramnios, and oligohydramnios.