Objective To evaluate an ultrasound training system designed to standardize teaching and learning of gynecological sonography using a virtual model. Methods

No abstract

Sonographically guided percutaneous aspiration of breast abscesses represents a less invasive and very promising alternative to surgical incision, showing the following advantages: no general anaesthesia required, a superior cosmetic result and shorter hospitalisation. The method was highly accepted by all patients treated.

Homoarginine labeling (guanidination) is used to calculate true prececal protein digestibility. A particular worry is that guanidination of proteins at alkaline pH might cause formation of D-amino acids. If D-amino acids show decreased protein digestibility in vivo, as seen in vitro, then the homoarginine method would underestimate protein digestibility. Therefore, the degree of protein racemization was measured during guanidination of casein at pH values between pH 9 and 11 and temperatures between 4 degrees and 65 degrees C. Optimal conditions for the guanidination reaction were 4 degrees C and pH 10.5-11 or 22 degrees C and pH 10. A higher pH value at 22 degrees C or temperatures above 22 degrees C at each pH leads to the formation of appreciable amounts of D-amino acids.

Uterine fibroids are the most common benign tumour affecting the female reproductive tract, 20% of all women older than 35 years are afflicted. Patients with fibroids tend to be asymptomatic, but fibroids may lead to meno-, metrorrhagia, hyper- and dysmenorrhoea and urination and defecation problems. If the fibroids do not cause any clinical symptoms and if there is no suspicion of a malignant tumor, there is no need for therapeutic intervention. Otherwise, besides the medical management with gestagenes and GnRH (gonadotropin-releasing hormone) analog, surgery represents the classical treatment. Hysterectomy is the common approach for women with completed family planning. For women who wish to conserve their fertility enucleation of the fibroids can be considered. These surgical procedures can be performed endoscopically or abdominally. Uterine artery embolisation, a radiological intervention, is less invasive and represents an interesting therapeutic alternative.