caa a22 4500 475787072 CHVBK 20180406123701.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1007/PL00008350 doi (NATIONALLICENCE)springer-10.1007/PL00008350 Testicular volume in Japanese boys up to the age of 15 years [Elektronische Daten] [Nobutake Matsuo, Makoto Anzo, Seiji Sato, Tsutomu Ogata, Tsutomu Kamimaki] Previous studies have indicated that Japanese children grow and mature significantly faster than Caucasian children, thus calling for a separate reference standard for each skeletal and sexual maturity index. To establish normal reference values for testicular volume in Japanese boys, we studied from 1985 to 1995, 900 healthy male children of 0 to 15 years of age for medical history, physical examination, height, weight, sitting height, and head circumference measurements, Tanner sex maturity stage, and testicular size. The testicular volume was determined using a Prader orchidometer by the same observer (N.M.). Based on these data, we established the cross-sectional percentile growth curves (90th, 50th, 10th percentiles) for testicular volume of Japanese boys. The testicular volume of 3 ml was attained at 9.3 years of age (90th percentile), 11.0 years of age (50th percentile), and 12.1 years of age (10th percentile), respectively. Conclusion Swelling of the testis in Japanese children begins approximately 1 year earlier than in Swiss children in accordance with the earlier skeletal maturation in Japanese children. Springer-Verlag Berlin Heidelberg, 2000 Key words Prader orchidometer nationallicence Testicular size nationallicence Cross-sectional data nationallicence Puberty nationallicence Matsuo Nobutake Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut Anzo Makoto Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut Sato Seiji Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut Ogata Tsutomu Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut Kamimaki Tsutomu Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut https://doi.org/10.1007/PL00008350 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00008350 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Matsuo Nobutake Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut NATIONALLICENCE 700 1- Anzo Makoto Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut NATIONALLICENCE 700 1- Sato Seiji Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut NATIONALLICENCE 700 1- Ogata Tsutomu Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut NATIONALLICENCE 700 1- Kamimaki Tsutomu Department of Paediatrics, Keio University Medical School, 35 Shinanomachi, Shinjuku-ku Tokyo 160-0016, Japan e-mail: nmatsuo@med.keio.ac.jp Tel.: +81-3-33531211; Fax: +81-3-53791978, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer