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Dysmorphism in One of a Set of Male Twins; Could They have been Identical Twins? A Diagnostic Dilemma.

Ibrahim A - J Family Med Prim Care (2014)

Bottom Line: Twinning occurs worldwide, but Nigerian women of the southwest extraction record one of the highest rates in the world.Among the notable risk factors for fraternal twinning is advanced maternal age, which is also an independent risk factor for Down syndrome.Even as morphological characteristics can easily be applied to distinguish identical from fraternal twins, in cases of an associated dysmorphism, in any member of the couplet, it becomes a difficult tool to use, as has been observed in the case of a set of twins who were of the same sex, blood group, hemoglobin genotype, and shared the same placenta.

View Article: PubMed Central - PubMed

Affiliation: Department of Pediatrics, Consultant Pediatrician, Aminu Kano Teaching Hospital,/Bayero University Kano, Kano State, Nigeria.

ABSTRACT
Twinning occurs worldwide, but Nigerian women of the southwest extraction record one of the highest rates in the world. Among the notable risk factors for fraternal twinning is advanced maternal age, which is also an independent risk factor for Down syndrome. Even as morphological characteristics can easily be applied to distinguish identical from fraternal twins, in cases of an associated dysmorphism, in any member of the couplet, it becomes a difficult tool to use, as has been observed in the case of a set of twins who were of the same sex, blood group, hemoglobin genotype, and shared the same placenta.

No MeSH data available.


Related in: MedlinePlus

Morphological discordance in the pair
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Figure 2: Morphological discordance in the pair

Mentions: On examination, he had a low set of ears, upward slanting of the palpebral fissure, prominent bilateral epicanthic folds, and a broad nasal base [Figure 1], with umbilical hernia. He appeared dysmorphic when compared to the other couplet [Figure 2]. The cardiac examination revealed tachycardia, with an apex beat at the sixth left intercostal space at the anterior axillary line. He also had a pansystolic murmur at the left lower sternal margin radiating upward.


Dysmorphism in One of a Set of Male Twins; Could They have been Identical Twins? A Diagnostic Dilemma.

Ibrahim A - J Family Med Prim Care (2014)

Morphological discordance in the pair
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4209690&req=5

Figure 2: Morphological discordance in the pair
Mentions: On examination, he had a low set of ears, upward slanting of the palpebral fissure, prominent bilateral epicanthic folds, and a broad nasal base [Figure 1], with umbilical hernia. He appeared dysmorphic when compared to the other couplet [Figure 2]. The cardiac examination revealed tachycardia, with an apex beat at the sixth left intercostal space at the anterior axillary line. He also had a pansystolic murmur at the left lower sternal margin radiating upward.

Bottom Line: Twinning occurs worldwide, but Nigerian women of the southwest extraction record one of the highest rates in the world.Among the notable risk factors for fraternal twinning is advanced maternal age, which is also an independent risk factor for Down syndrome.Even as morphological characteristics can easily be applied to distinguish identical from fraternal twins, in cases of an associated dysmorphism, in any member of the couplet, it becomes a difficult tool to use, as has been observed in the case of a set of twins who were of the same sex, blood group, hemoglobin genotype, and shared the same placenta.

View Article: PubMed Central - PubMed

Affiliation: Department of Pediatrics, Consultant Pediatrician, Aminu Kano Teaching Hospital,/Bayero University Kano, Kano State, Nigeria.

ABSTRACT
Twinning occurs worldwide, but Nigerian women of the southwest extraction record one of the highest rates in the world. Among the notable risk factors for fraternal twinning is advanced maternal age, which is also an independent risk factor for Down syndrome. Even as morphological characteristics can easily be applied to distinguish identical from fraternal twins, in cases of an associated dysmorphism, in any member of the couplet, it becomes a difficult tool to use, as has been observed in the case of a set of twins who were of the same sex, blood group, hemoglobin genotype, and shared the same placenta.

No MeSH data available.


Related in: MedlinePlus