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Background Postanalytic issues of Ki67 assessment in breast cancers like counting method standardisation and interrater bias have been subject of various studies, but little is known about analytic variability of Ki67 staining between pathology labs. Our aim was to study interlaboratory variability of Ki67 staining in breast cancer using tissue microarrays (TMAs) and central assessment to minimise preanalytic and postanalytic influences. Methods Thirty European pathology labs stained serial slides of a TMA set of breast cancer tissues with Ki67 according to their routine in-house protocol. The Ki67-labelling index (Ki67-LI) of 70 matched samples was centrally assessed by one observer who counted all cancer cells per sample. We then tested for differences between the labs in Ki67-LI medians by analysing variance on ranks and in proportions of tumours classified as luminal A after dichotomising oestrogen receptor–positive cancers into cancers showing low (

In a twin pregnancy of a 25-year-old woman one fetus was a normal male, while the other had hydrocephalus (6 mm thick pallium in the 23rd week) and a neural-tube defect in the thoracic-lumbar region. The abnormal fetus was removed by minor section in the 24th week, after which the normal one developed without complication. A healthy boy, weighing 3050 g and 52 cm long, was delivered spontaneously in the 39th week. Palpation of the uterus revealed a dehiscence, covered by muscle, in the region of the uterotomy scar, but it required no revision.

We have measured differential cross sections for \pp elastic scattering with internal fiber targets in the recirculating beam of the proton synchrotron COSY. Measurements were made continuously during acceleration for projectile kinetic energies between 0.23 and 2.59 GeV in the angular range $30 \leq \theta_{c.m.} \leq 90$ deg. Details of the apparatus and the data analysis are given and the resulting excitation functions and angular distributions presented. The precision of each data point is typically better than 4%, and a relative normalization uncertainty of only 2.5% within an excitation function has been reached. The impact on phase shift analysis as well as upper bounds on possible resonant contributions in lower partial waves are discussed., Comment: 23 pages 29 figures

The diagnostic group of dysplasias has been described as "a group of diagnostic impotence". DNA-aneuploidy detected by image cytometry of Feulgen stained pap smears indicates a potentially progressive lesion, representing a high-grade lesion. DNA-cytometry can identify cases of dysplasias which are likely to progress: DNA-aneuploid dysplasias are HSIL. DNA-aneuploidy is the expression of an integral HPV infection. CIN-lesions with episomal HPV infections are DNA-diploid. With the newly developed laserscanning cytometer (LSC) of ThinPrep-Preparation an automatisation of ploidy measurement is possible in combination with HPV-PCR. We recommend DNA-Image-cytometry as a routine method for classification of uterine cervical borderline lesion into regressive and progressive.

Zusammenfassung In der vorliegenden Arbeit wird das Bestrahlungsplanungssystem ProPlan hinsichtlich seiner Genauigkeit bei der Berechnung von Dosisverteilungen in inhomogenen Medien uberpruft. Hierzu dienen Messungen mit Thermolumineszenzdosimetern im anthropomorphen Alderson-Phantom. Wichtig ist hierbei die Frage, ob man den in der Strahlentherapie geforderten Toleranzbereich von 5 % einhalten kann. Als kritisch erweisen sich solche Zielgebiete, deren Dichten besonders inhomogen sind bzw. sehr von der Dichte von Wasser abweichen.

Recently published excitation functions in proton-proton (pp) elastic scattering observables in the laboratory energy range 0.5-2.5GeV provide an excellent data base to establish firm upper limits on the elasticities ηel = Γel/Γtot of possible isovector resonant contributions to the nucleon-nucleon (NN) system. Such contributions have been predicted to arise from dibaryonic states, with c.m. masses between 2.1-2.9GeV/c2, but have not been confirmed experimentally. A method to determine quantitatively the maximum value of ηel compatible with experimental data is presented. We use energy-dependent phase shift fits to the pp data base to model the non-resonant interaction. Based upon the differential cross-section data measured by the EDDA Collaboration an unbiased statistical test is constructed to obtain upper limits on ηel, that exclude larger values with a 99% confidence level. Results in the c.m. mass range 2.05-2.85GeV/c2 and total widths of 10-100MeV/c2 in the partial waves 1S0, 1D2, 3P0, 3P1, and 3F3 are presented and discussed.