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Table of Contents
LETTER TO THE EDITOR
Year : 2015  |  Volume : 19  |  Issue : 1  |  Page : 189

Cut-offs for stretched penile length in neonates


1 Department of Pediatrics, Pediatric Endocrinology Unit, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2 Department of Pediatrics, Child Growth and Anthropology Unit, Postgraduate Institute of Medical Education and Research, Chandigarh, India

Date of Web Publication12-Dec-2014

Correspondence Address:
Devi Dayal
Department of Pediatrics, Pediatric Endocrinology Unit, Advanced Pediatrics Centre, Postgraduate Institute of Medical Education and Research, Chandigarh - 160 012
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2230-8210.146882

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How to cite this article:
Dayal D, Bhalla AK. Cut-offs for stretched penile length in neonates. Indian J Endocr Metab 2015;19:189

How to cite this URL:
Dayal D, Bhalla AK. Cut-offs for stretched penile length in neonates. Indian J Endocr Metab [serial online] 2015 [cited 2019 Nov 18];19:189. Available from: http://www.ijem.in/text.asp?2015/19/1/189/146882

Sir,

We read with interest the recently published paper by Prabhu et al. titled, "Normative data for stretched penile length in term neonates born in Tamil Nadu". [1] The attempt to establish local norms for stretched penile length (SPL) in neonates is noteworthy in view of racial and ethnic variations worldwide. [2] However, the usefulness of their data in a clinical practice is limited in the absence of defined cut-off of SPL measurements. We believe that some re-evaluation of the available data will significantly improve the clinical utility of their findings.

The clinical utility of SPL measurements in neonates depends upon the ability to define micropenis or macropenis based on the published normative data. A finding of micropenis in a neonate is an important clinical clue to numerous underlying disorders associated with pituitary/hypothalamic failure, primary testicular failure, defects in testosterone action as well as some syndromes. [2] Similarly, macropenis may lead to the identification of rare syndromes like Lenz microphthalmia syndrome and Beckwith-Wiedemann syndrome. [3] The definition of micro or macropenis is based on SPL of 2.5 standard deviation (SD) below or above the mean for age respectively. [2] Alternatively, 3 rd and 97 th percentile values can be used. [4] In this context, it is important to establish a range, lower (−2.5 SD) and upper (+2.5 SD) cut-offs or lower (3 rd ) and upper (97 th ) centiles of the SPL measurements. Methods used in previous studies on normative data may be applied to the available data to establish the cut-off values. [4],[5] These can then be supplied as supplementary data files in a forthcoming issue of Indian Journal of Endocrinology and Metabolism.

 
   References Top

1.
Prabhu SR, Mahadevan S, Bharath R, Jagadeesh S, Kumutha J, Suresh S. Normative data for stretched penile length in term neonates born in Tamil Nadu. Indian J Endocrinol Metab 2014;18:585-6.  Back to cited text no. 1
    
2.
Wiygul J, Palmer LS. Micropenis. ScientificWorldJournal 2011;11:1462-9.  Back to cited text no. 2
    
3.
Okumus N, Zenciroglu A, Demirel N, Bas AY, Ceylaner S. Apparent Lenz microphthalmia syndrome: A patient with unusual manifestations. Genet Couns 2008;19:177-82.  Back to cited text no. 3
    
4.
Kutlu AO. Normative data for penile length in Turkish newborns. J Clin Res Pediatr Endocrinol 2010;2:107-10.  Back to cited text no. 4
    
5.
Al-Herbish AS. Standard penile size for normal full term newborns in the Saudi population. Saudi Med J 2002;23:314-6.  Back to cited text no. 5
    




 

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