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| 1 | Improving recognition of hepatic perivascular epithelioid cell tumor:Case report and literature review显示文摘A 58-year-old man presented with the chief complaint of abdominal bloating and was incidentally found to have a liver tumor.As diagnostic imaging studies could not rule out malignancy,the patient underwent partial resection of segment 3 of the liver.The lesion pathologically showed eosinophilic proliferation,in addition to immunohistochemical positivity for human melanoma black 45 and Melan-A,thereby leading to the diagnosis of a hepatic perivascular epithelioid cell tumor(PEComa).A PEComa arising from the liver is relatively rare.Moreover,the name ‘PEComa' has not yet been widely recognized,and the same disease entity has been called epithelioid angiomyolipoma(EAML),further diminishing the recognition of PEComa.In addition,PEComa imaging findings mimic those of malignant liver tumors,and clinically,this tumor tends to enlarge.Therefore,a PEComa is difficult to diagnose.We conducted a systematic review of PEComa and EAML cases and discuss the results,including findings useful for differentiating perivascular epithelioid cell tumors from malignant liver tumors. | Toshiya Maebayashi Katsumi Abe Takuya Aizawa Masakuni Sakaguchi Naoya Ishibashi Osamu Abe Tadatoshi Takayama Hisashi Nakayama Shunichi Matsuoka Kazushige Nirei Hitomi Nakamura Masahiro Ogawa Masahiko Sugitani | 2015 | World Journal of Gastroenterology2015，21，17： | 20 |
| 2 | High-reliability zircon separation for hunting the oldest material on Earth: An automatic zircon separator with image-processing/microtweezers-manipulating system and double-step dating显示文摘Despite the recent development in radiometric dating of numerous zircons by LA-ICPMS, mineral separation still remains a major obstacle, particularly in the search for the oldest material on Earth. To improve the efficiency in zircon separation by an order of magnitude, we have designed/developed a new machine-an automatic zircon separator(AZS). This is designed particularly for automatic pick-up of100 μm-sized zircon grains out of a heavy mineral fraction after conventional separation procedures. The AZS operates in three modes:(1) image processing to choose targeted individual zircon grains out of all heavy minerals spread on a tray,(2) automatic capturing of the individual zircon grains with microtweezers, and(3) placing them one-by-one in a coordinated alignment on a receiving tray. The automatic capturing was designed/created for continuous mineral selecting without human presence for many hours. This software also enables the registration of each separated zircon grain for dating, by recording digital photo-image, optical(color) indices, and coordinates on a receiving tray. We developed two new approaches for the dating; i.e.(1) direct dating of zircons selected by LA-ICPMS without conventional resin-mounting/polishing,(2) high speed U-Pb dating, combined with conventional sample preparation procedures using the new equipment with multiple-ion counting detectors(LA-MIC-ICPMS).With the first approach, Pb-Pb ages obtained from the surface of a mineral were crosschecked with the interior of the same grain after resin-mounting/polishing. With the second approach, the amount of time required for dating one zircon grain is ca. 20 s, and a sample throughput of >150 grains per hour can be achieved with sufficient precision(ca. 0.5%).We tested the practical efficiency of the AZS, by analyzing an Archean Jack Hills conglomerate in Western Australia with the known oldest(>4.3 Ga) zircon on Earth. Preliminary results are positive; we were able to obtain more than 194 zircons that are over 4.0 Ga out of ca. 3800 checked grains, and 9 grains were over 4300 Ma with the oldest at 4371 ± 7 Ma. This separation system by AZS, combined with the new approaches, guarantees much higher yield in the hunt for old zircons. | Yukio Isozaki Shinji Yamamoto Shuhei Sakata Hideyuki Obayashi Takafumi Hirata Ken-ichi Obori Toshinori Maebayashi Satoshi Takeshima Toshikazu Ebisuzaki Shigenori Maruyama | 2018 | Geoscience Frontiers2018，9，4： | 1 |
| 3 | Symptom Structure in Japanese Patients with Obsessive-Compulsive Disorder显示文摘 | Matsunaga H Maebayashi K Hayashida K | 2008 | Am J Psychiatry2008，165，2： | 1 |
| 4 | Symptom structure in Japanese patients with obsessive-compulsive disorder 显示文摘 | Matsunaga H Maebayashi K Hayashida K | 2008 | Am J Psychiatry2008，165，： | 1 |
| 5 | Structure of cyperolone显示文摘 | Hikino Hiroshi Aota Keitaro Maebayashi Yukio | 1966 | Chem Pharm Bulletin1966，14，12： | 1 |
| 6 | Ubiquinone system of the form-genus chrysosporium显示文摘 | Takizawa K Kaoru O Maebayashi Y | 1994 | Mycoscience1994，35，： | 1 |
| 7 | Testicular de- velopment and serum sex steroid profiles during the annual sexual cycle of the male sturgeon hybrid, the bester显示文摘 | Amiri B M Maebayashi M Adachi S | 1996 | J Fish Biol1996，48，： | 1 |
| 8 | Sex ratios of triploids and gynogenetic diploids induced in the hybrid sturgeon,the bester(Huso huso female×Acipenser ruthenus male)显示文摘 | Omoto N Maebayashi M Adachi S | 2005 | Aquaculture2005，245，14： | 1 |
| 9 | Ubiquinone system of the form-genusChrysosporium显示文摘 | Takizawa K Kaoru O Maebayashi Y | 1994 | Mycoscience1994，35，： | 1 |
| 10 | Ubiquinone systems of the genus Cladosporiumand morphologically similar taxa显示文摘 | Kaoru O Takizawa K Maebayashi Y | 1996 | FEMS Microbiol Lett1996，16，： | 1 |
| 11 | Histological observation of gonadel sex differentiation in the F2 hybrid sturgeon, the bester显示文摘 | Naotaka Omoto Mamoru Maebayashi Eft Misuhashi | 2001 | Fish Sci2001，67，： | 1 |
| 12 | Effect of estradio1-1715 and 17a - methyltestosterone on gonadal sea differentiation in the F2 hybrid sturgeon, the bester显示文摘 | Naotaka Omoto Mamoru Maebayashi Eli Misuhashi | 2002 | Fish Sci2002，68，： | 1 |
| 13 | Testicular development and serum sex steroid profiles during the annu- al sexual cycle of the male sturgeon hybrid, the bester显示文摘 | Amiri B M Maebayashi M Adachi S 1996a | 1996 | Journal of Fish Biology1996，48，6： | 1 |
| 14 | Ovarian de-velopment and serum sex steroid and vitellogenin profiles in the female cultured sturgeon hybrid, the bester 显示文摘 | Amiri B M Maebayashi M Hara A 1996b | 1996 | Jour- nal of Fish Biology1996，48，6： | 1 |
| 15 | In vitro steroidogenesis by testicular fragments and ovarian ollicles in a hybrid sturgeon, Bester显示文摘 | Amiri B M Maebayashi M Adachi S | 1999 | Fish Physiology and Biochemistry1999，21，： | 1 |
| 16 | In vitro steroidogenesis by testicular fragments and ovarian ollicles in a hybrid sturgeon, Bester 显示文摘 | AMIRI B M MAEBAYASHI M ADACHI S | 1999 | Fish Physiology and Biochemistry1999，21，： | 1 |
| 17 | Relationship between serum steroid levels and in vitro steroidogenesis by gonads of a hybrid sturgeon, Bester, at different developmental stages显示文摘 | Amiri B M Maebayashi M Adachi S | 1995 | Aquaculture1995，135，： | 1 |
| 18 | Testieular development and serum sex steroid profiles during the annual sexual cycle of the male sturgeon hybrid 显示文摘 | Mojazi Amiri B Maebayashi M Adaehi S | 1996 | J Fish Biol1996，48，： | 1 |
| 19 | Testicular development and serum sex steroid profiles during the annual sexual cycle of the male sturgeon hybrid, the Bester显示文摘 | AMIRI B M MAEBAYASHI M ADACHI S | 1996 | Journal of Fish Biology1996，48，6： | 1 |
| 20 | Testicular development and serum sex sleroid profiles during the annual sexual cycle of the male sturgeon hybrid, the Bester显示文摘 | Amiri B M Maebayashi M Adachi S | 1996 | Journal of Fish Biology1996，48，6： | 1 |
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