Thrombosed right coronary artery aneurysm presenting as a myocardial mass.

A coronary artery aneurysm is defined as coronary dilatation that exceeds the diameter of normal adjacent artery segments, or is 1.5 times the diameter of the largest coronary artery. Coronary artery aneurysms are rare with an incidence of between 1.

Presence of fever and leukocytosis in acute cholecystitis.

Study Objective: To determine the frequency of fever and leukocytosis in patients presenting to the emergency department with acute cholecystitis (AC).

Methods: We carried out a retrospective review of charts from 1990 to 1993 at a university-affiliated hospital. Our subjects were ED patients with hepato-iminodiacetic acid (HIDA) scans interpreted as showing AC and who had undergone cholecystectomy during hospitalization.

Transvaginal ultrasonography and transabdominal embryoscopy in the first-trimester diagnosis of Smith-Lemli-Opitz syndrome, type II.

Objective: Our goal was to demonstrate the efficacy of transabdominal embryoscopy in the first trimester of pregnancy.

Study Design: A patient at risk for Smith-Lemli-Opitz syndrome, type II, was referred for prenatal diagnosis at 11 weeks 5 days of gestation.

Results: A transvaginal ultrasonographic examination revealed the presence of a nuchal membrane and bilateral polydactyly.

Investigation of polypyrrole/glucose oxidase electrodes by ellipsometric, microgravimetric and electrochemical measurements.

We describe the simultaneous application of two in-situ techniques for the study of the electrochemical growth of a conducting polymer film (polypyrrole) in the presence of an enzyme (glucose oxidase). The combination of optical (ellipsometric) and microgravimetric (QCMB) measurements employed in this study provides information on fundamental properties of the enzyme-containing film, including film thickness, mass and density. Our results show that incorporation of the enzyme results in changes in the apparent optical properties and in the apparent density of the electrochemically grown film which suggest mutual stabilization of the polypyrrole and the enzyme in the composite layer.