Penile length of term newborn infants in multiracial Malaysia.
Introduction: Micropenis may be an important sign of underlying hypogonadism or pituitary hypofunction in the neonatal period. Penile lengths of normal newborns have been reported in many Western populations. However, the data may not be applicable in the Asian or the multiracial Malaysian populat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Singapore Medical Association
2009
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/16095/ http://psasir.upm.edu.my/id/eprint/16095/1/Penile%20length%20of%20term%20newborn%20infants%20in%20multiracial%20Malaysia.pdf |
| _version_ | 1848842864419667968 |
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| author | Ting, Tzer Hwu Wu, LooLing |
| author_facet | Ting, Tzer Hwu Wu, LooLing |
| author_sort | Ting, Tzer Hwu |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Introduction:
Micropenis may be an important sign of underlying hypogonadism or pituitary hypofunction in the neonatal period. Penile lengths of normal newborns have been reported in many Western populations. However, the data may not be applicable in the Asian or the multiracial Malaysian population. Our study aimed to establish the normal penile length and testicular volume in term newborn infants in the major ethnic groups in Malaysia.
Methods:
The stretched penile length and testicular volume were measured in 340 normal term newborn infants (195 Malays, 129 Chinese and 16 Indians).
Results:
The mean penile length in Malay term newborn infants was 35 +/- 4 mm, which was similar to Chinese infants. The mean testicular volume was 2.5 +/- 0.6 ml in Malay and 2.4 +/-0.5 ml in Chinese infants. There was no significant difference between the groups. The sample size for the Indian group during the study period was inadequate.
Conclusion:
Using -2.5 standard deviations as the cut-off for micropenis, a Malay or Chinese newborn infant in Malaysia with a penile length of less than 25 mm is considered to have a micropenis and further evaluation is warranted. |
| first_indexed | 2025-11-15T08:05:54Z |
| format | Article |
| id | upm-16095 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:05:54Z |
| publishDate | 2009 |
| publisher | Singapore Medical Association |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-160952016-01-19T03:32:11Z http://psasir.upm.edu.my/id/eprint/16095/ Penile length of term newborn infants in multiracial Malaysia. Ting, Tzer Hwu Wu, LooLing Introduction: Micropenis may be an important sign of underlying hypogonadism or pituitary hypofunction in the neonatal period. Penile lengths of normal newborns have been reported in many Western populations. However, the data may not be applicable in the Asian or the multiracial Malaysian population. Our study aimed to establish the normal penile length and testicular volume in term newborn infants in the major ethnic groups in Malaysia. Methods: The stretched penile length and testicular volume were measured in 340 normal term newborn infants (195 Malays, 129 Chinese and 16 Indians). Results: The mean penile length in Malay term newborn infants was 35 +/- 4 mm, which was similar to Chinese infants. The mean testicular volume was 2.5 +/- 0.6 ml in Malay and 2.4 +/-0.5 ml in Chinese infants. There was no significant difference between the groups. The sample size for the Indian group during the study period was inadequate. Conclusion: Using -2.5 standard deviations as the cut-off for micropenis, a Malay or Chinese newborn infant in Malaysia with a penile length of less than 25 mm is considered to have a micropenis and further evaluation is warranted. Singapore Medical Association 2009-08 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16095/1/Penile%20length%20of%20term%20newborn%20infants%20in%20multiracial%20Malaysia.pdf Ting, Tzer Hwu and Wu, LooLing (2009) Penile length of term newborn infants in multiracial Malaysia. Singapore Medical Journal, 50 (8). pp. 817-821. ISSN 0037-5675 http://smj.sma.org.sg/smjcurrent.html Penis length - Male newborn - Malaysia Anthropometry - Cross-Sectional Studies - Micropenis Testis size - Infant - Malaysia |
| spellingShingle | Penis length - Male newborn - Malaysia Anthropometry - Cross-Sectional Studies - Micropenis Testis size - Infant - Malaysia Ting, Tzer Hwu Wu, LooLing Penile length of term newborn infants in multiracial Malaysia. |
| title | Penile length of term newborn infants in multiracial Malaysia. |
| title_full | Penile length of term newborn infants in multiracial Malaysia. |
| title_fullStr | Penile length of term newborn infants in multiracial Malaysia. |
| title_full_unstemmed | Penile length of term newborn infants in multiracial Malaysia. |
| title_short | Penile length of term newborn infants in multiracial Malaysia. |
| title_sort | penile length of term newborn infants in multiracial malaysia. |
| topic | Penis length - Male newborn - Malaysia Anthropometry - Cross-Sectional Studies - Micropenis Testis size - Infant - Malaysia |
| url | http://psasir.upm.edu.my/id/eprint/16095/ http://psasir.upm.edu.my/id/eprint/16095/ http://psasir.upm.edu.my/id/eprint/16095/1/Penile%20length%20of%20term%20newborn%20infants%20in%20multiracial%20Malaysia.pdf |