İnsan Fetüslerinde Anogenital Mesafe, Penis ve Klitoris Boyutlarının Morfometrik Olarak İncelenmesi

Abstract

Amaç: Çalışmada kız ve erkek fetüslerde anogenital mesafe, penis ve klitoris boyutlarının morfometrik ölçümleri yapılarak, konu ile ilgili antenatal dönem standartların belirlenmesine katkı sağlanması amaçlanmıştır. Gereç ve Yöntem: Formalinle fikse edilmiş 55 fetüs değerlendirildi. Anogenital mesafe kızlarda anüs orta hat-posterior fourchette, erkeklerde anüs orta hat-posterior skrotal raphe arası mesafe olarak ölçüldü. Kız fetüslerde klitoris uzunluğu ve klitoral glansın genişliği ölçüldü. Erkek fetüslerde penis (glans) genişliği ve penis uzunluğu ölçüldü. Bulgular: Çalışmaya dahil edilen fetüslerin 29’u kız, 26’sı erkek idi. Erkek fetüslerde hem ikinci hem üçüncü trimesterde kızlara göre anogenital mesafe değerlerinin anlamlı şekilde fazla olduğu tespit edildi (p=0,031). Anogenital mesafe ile fallus uzunluk değerleri arasında erkek fetüslerde anlamlı bir ilişki tespit edilirken kız fetüslerde anlamlı bir ilişki tespit edilmedi (p<0,001), (p=0,212). İkinci trimesterde fallus uzunluğunun 5,58 mm’den, fallus genişliğinin 4,55 mm’den küçük değerleri kız cinsiyet ile ilişkilendirilirken, üçüncü trimesterde fallus uzunluğunun 4,79 mm’den, fallus genişliğinin 5,08 mm’den küçük değerlerinin kız cinsiyet ile ilişkili olduğu görüldü (p<0,0001), (p=0,0003). Sonuç: Çalışmada fallus boyutları ile ilgili tespit edilen referans değerlerin ve bu değerlerin anogenital mesafe ile olan ilişkisinin, antenatal dönemde normalden sapma ve cinsiyet tayini konularına katkı sağlayabileceği düşünülmektedir.

Keywords

• Anogenital Mesafe
• Penis
• Klitoris

Morphometric Examination of Anogenital Distance, Penis and Clitoris Dimensions in Human Fetuses

Abstract

Objectives: In the study, morphometric measurements of anogenital distance, penis and clitoris dimensions were taken in female and male fetuses. In this way, it is aimed to contribute to the determination of antenatal period standards related to the subject. Materials and Methods: Fifty-five fetuses were included in the study. The anogenital distance was measured as the anus midline-posterior fourchette in girls, and the anus midline-posterior scrotal raphe in boys. Clitoris length and clitoral glans width were measured in female fetuses. Penis (glans) width and penis length were measured in male fetuses. Results: Of the 55 fetuses, 29 were female, 26 were male. Anogenital distance values were found to be significantly higher in male fetuses in both second and third trimesters compared to female fetuses (p=0.031). While a significant relationship was found between anogenital distance and phallus length values in male fetuses, no significant relationship was found in female fetuses (p<0.001), (p=0.212). In the second trimester, values of phallus length less than 5.58 mm and phallus width less than 4.55 mm are associated with female gender. In the third trimester, phallus length less than 4.79 mm and phallus width less than 5.08 mm were found to be associated with female gender (p<0.0001), (p=0.0003). Conclusion: It is thought that the reference values determined in the study regarding the phallus dimensions and the relationship of these values with the anogenital distance may contribute to the issues of deviation from normal and sex determination in the antenatal period.

Keywords

• Anogenital Distance
• Penis
• Clitoris

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