Sex reassignment surgery for male to female transsexuals: initial experience in Okayama university hospital.

The first case of sex reassignment surgery (SRS) in our hospital was performed in January 2001; as of February, 2005, 4 cases of MTF-SRS had been performed. In the 2 most recent cases, we used penile and scrotal skin flaps to avoid complications. The depth and width of the new vagina was made to be adequate for sexual intercourse. Future attention should be focused on devising a surgical technique that will help prevent the complications of partial necrosis of the epidermal skin and wound dehiscence. Although ours is only an initial experience, we describe our surgical technique herein.</p

Radar Echo Detection System of EAS Ionization Columns as Part of a LAAS Detector Array

Abstract Extensive air shower (EAS) resulting from ultra high energy cosmic rays have been observed by means of compact arrays of scintillation detectors in order to study large-scale correlations of cosmic rays, by the Large Area Air Shower (LAAS) group. The possibility to detect the radar echoes produced by scattering from ionization columns in an EAS were proposed on the basis of the theoretical and phenomenological calculation on the analogy to the observation of meteor ionization tails at radar frequencies of the low VHF range. Four EAS arrays are operated in Okayama as part of LAAS experiments, and some of them are equipped with the observation systems of radar meteor echoes. The prototype of EAS radar echo detection system synchronized with EAS trigger signals have been constructed. In the early results on coincident radar echoes with EAS trigger signals, we could not find any significant correlation during this period

Simulation study on the Performance of Synchronized Compact Arrays within 1 km Baseline

Abstract The synchronized compact arrays for detecting extensive air shower (EAS) are deployed in Okayama, Japan, as part of the Large Area Air Shower (LAAS) experiments. 4 arrays in Okayama area are independently operated and equipped with the precise GPS system, of which time resolution is 1 µs. The baselines of 4 arrays range from 100m to 1000m. We analyzed time interval distributions of EASs between each array. Event pairs in time interval less than 1 µs were observed, ant the number of them are much more than that expected by chance coincidence. Observing energy ranges were estimated for these events by CORSIKA simutaion codes. By using simultaneous observed EAS at multiple synchronized arrays, we can select higher energy EAS effectively

A case of clear cell adenocarcinoma arising from the urethral diverticulum: Utility of urinary cytology and immunohistochemistry

Carcinomas rarely arise from the urethral diverticulum. In this report, we present a case of clear cell adenocarcinoma arising from the urethral diverticulum. A 42-year-old woman complained of bloody discharge and lower back pain. Imaging studies showed a tumor involving the region surrounding the urethra and cystourethroscopy showed papillary and villous tumors in the urethral diverticula. Cytology of the urine sediment showed papillary or spherical clusters of atypical cells, some of which had clear abundant cytoplasm and formed mirror ball-like clusters, suggesting adenocarcinoma. Although histological diagnosis was indeterminate by biopsy and transurethral resection (TUR) because of absence of stromal invasion, surgically resected specimen via cysturethrectomy revealed that the tumor was clear cell carcinoma. Urinary cytological findings and immunohistochemical analysis for CD15, Ki-67, and p53 might be useful for accurate diagnosis of clear cell adenocarcinoma that arises from the urethral diverticulum when sufficient materials are not available by biopsy and TUR

Search for large-scale coincidences of EAS in LAAS experiment

Abstract To search for signals from extreme short bursts in the universe, we have performed the large-scale coincidence analysis, using EAS data from five stations of the Large Area Air Shower (LAAS) group. By comparing arrival times and arrival directions of EAS detected at distant stations, coincident and parallel EAS pairs were extracted out of a sea of background cosmic rays. One of them was intriguingly observed from directions consistent with the Crab Nebula, a previously reported UHE γ-ray source. The preliminary results reported here allow the analysis techniques to be tested and demonstrate the potential of observations with the full operation of the network detector system as a cosmic ray interferometer