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OHVIRA (Obstructed Hemivagina and Ipsilateral Renal Anomaly) syndrome is characterized by double uterus, double vagina, one-sided vaginal obstruction that causes hemivaginal hematoma, and congenital renal defects on the same side as the hematoma. A woman generally develops this syndrome during her puberty, possibly before her first experience of sexual intercourse. The presence of these conditions often makes both, pelvic examination and transvaginal ultrasonography challenging for establishing a preoperative diagnosis of OHVIRA syndrome. Our 13-year-old patient underwent the following diagnostic procedures before the surgery: transvaginal ultrasonographic scanning, pelvic magnetic resonance imaging, and abdominal computed tomography; thereafter, transvaginal resectoscopic surgery for the obstructed vagina was performed successfully. A resectoscope gave a good transvaginal view in the small hemivaginal vault of each side.

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ArF excimer lasers are the light source of choice for the next generation of microlithographic tools enabling structures below the l3Onm technology node. For these lithographic mass production lines Komatsu successfully developed an ArF excimer laser, named "G2OA", which has a 2kHz pulse repetition rate, lOW average power and O.5pm (FWHM) spectral bandwidth.G2OA has three significantly improved important items: (1) the high resolution line narrowing module, (2) the high power and high repetition rate solid state pulse power module, and (3) the Xe added laser gas yielding an improved overall laser performance.ArF laser spectra were determined with our newly developed high-resolution spectrometer. The instrument function of the spectrometer was measured with a 1 93nm coherent light source jointly developed with the University of Tokyo.The laser gas composition is one key parameter of excimer laser performance. The deteriorating effect of impurities on ArF performance is e.g. ten times larger than on KrF performance. We observed that added Xe gas, however, has a beneficial effect on the pulse energy and the energy stability at high repetition rates.Experimental results of a currently developed 4 kHz ArF laser are also reported.