664
views
0
recommends
+1 Recommend
0 collections
    8
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Normative Data for Penile Length in Turkish Newborns

      research-article
      1 ,
      Journal of Clinical Research in Pediatric Endocrinology
      Galenos Publishing
      Stretched penile length, newborn, Turkish boys

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background: Local normative data for penile size will aid physicians in clinical practice. There are no studies on stretched penile length (SPL) in newborn Turkish boys.

          Objective: To establish normative data for SPL of newborn Turkish boys and compare these with data from different countries. Methods: 514 newborn Turkish boys, who were not small for gestational age (SGA) or premature, were included in this cross−sectional study. SPLs of the newborns were measured by the same investigator. The correlations between SPL and gestational age, weight, length, and head circumference were evaluated.

          Results: The 3 rd percentile value for SPL was found as 3.00 cm in these Turkish newborns. Positive correlations were shown between SPL and height (r=0.240, p<0.001), weight (r=0.251, p<0.001), and head circumference (r=0.235, p<0.001). Multiple linear regression analysis showed that SPL positively correlated with height and head circumference (p=0.021 and p= 0.042, respectively).

          Conclusions: This is the largest study on SPL in newborns from our country. This normative data can be used in clinical practice for defining micropenis.

          Conflict of interest:None declared.

          Related collections

          Most cited references16

          • Record: found
          • Abstract: found
          • Article: not found

          Smoothing reference centile curves: the LMS method and penalized likelihood.

          Refence centile curves show the distribution of a measurement as it changes according to some covariate, often age. The LMS method summarizes the changing distribution by three curves representing the median, coefficient of variation and skewness, the latter expressed as a Box-Cox power. Using penalized likelihood the three curves can be fitted as cubic splines by non-linear regression, and the extent of smoothing required can be expressed in terms of smoothing parameters or equivalent degrees of freedom. The method is illustrated with data on triceps skinfold in Gambian girls and women, and body weight in U.S.A. girls.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Postnatal penile length and growth rate correlate to serum testosterone levels: a longitudinal study of 1962 normal boys.

            Infant boys show a brief activation of their hypothalamic-pituitary-gonadal axis shortly after birth, the physiological significance of which is poorly understood. The objective of the study was to investigate the correlation between endogenous testosterone levels and penile size and growth. Prospective, longitudinal population-based study taking place at two large primary obstetric centres at the University Hospitals of Copenhagen, Denmark, and Turku, Finland. Infant boys, 728 Danish and 1234 Finnish, underwent clinical examinations at 0, 3, 18 and 36 months in Denmark and at 0, 3 and 18 months in Finland with blood samples taken at 3 months (n = 630). Penile length and growth were registered and reproductive hormones (testosterone, sex hormone binding globulin, oestradiol) were analysed. Penile length increased from birth (3.49+/-0.4 cm) to 3 years of age (4.53+/-0.51 cm) with the highest growth velocity from birth to 3 months (1.0 mm/month). Penile length and growth were significantly, positively correlated to serum testosterone (r = 0.31 and 0.076, P = 0.006 and 0.001 respectively) and to free testosterone index (r = 0.385 and 0.094, P = 0.0001 and 0.0001 respectively). We found that endogenous testosterone was significantly associated with penile size and growth rate in infant boys. Thus, the postnatal surge in reproductive hormones appears to be important for genital growth. Our data may serve as an updated reference for normal penile length in Caucasian boys up to 3 years of age.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Fetal phallic growth and penile standards for newborn male infants.

              No appreciable difference in size of the fetal clitoris versus the fetal penis was noted until 14 weeks' gestation, which is after the period of masculine differentiation of the external genitals. However, significant differences in the rate of penile and clitoral growth were evident in second trimester fetuses. The majority of the prenatal growth of the penis occurs after 14 weeks gestation at an almost linear rate. The penile stretched length of the full-term infant was 3.5 cm plus or minus 0.7 cm and the diameter was 1.1 cm plus or minus 0.2 cm.
                Bookmark

                Author and article information

                Journal
                J Clin Res Pediatr Endocrinol
                JCRPE
                Journal of Clinical Research in Pediatric Endocrinology
                Galenos Publishing
                1308-5727
                1308-5735
                September 2010
                3 August 2010
                : 2
                : 3
                : 107-110
                Affiliations
                [1 ] Zübeyde Hanim Maternal Hospital, Pediatric Endocrinology, Ankara, Turkey
                +90 532 396 47 78+90 312 437 93 06 alevkutlu64@ 123456yahoo.com.tr Nenehatun Caddesi No: 61/3 Gaziosmanpasa, 06430, Ankara, Turkey
                Article
                65
                10.4274/jcrpe.v2i3.107
                3005681
                21274323
                754513c6-c991-4e9d-bfa0-7987848f68ec
                © Journal of Clinical Research in Pediatric Endocrinology, Published by Galenos Publishing.

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 2 June 2010
                : 18 June 2010
                Categories
                Original Article

                Pediatrics
                turkish boys,newborn,stretched penile length
                Pediatrics
                turkish boys, newborn, stretched penile length

                Comments

                Comment on this article