Morphology of the corpus callosum in human fetuses

Koshi, Rachel; Koshi, Thomas; Jeyaseelan, L.; Vettivel, Selvakumar

doi:10.1002/(sici)1098-2353(1997)10:1<22::aid-ca4>3.3.co;2-a

Cited by 3 publications

(2 citation statements)

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“…Subsequent studies on corpus callosum size differences were not consistent, with several studies showing larger measurements in men 9,10,15,16 or women [17][18][19] or no significant difference. [20][21][22][23] According to a series of meta-analyses and recent studies, the absolute size of the corpus callosum is larger in men than in women. 9,15,16,[24][25][26][27] In studies on preterm individuals, a reduced corpus callosum size has been correlated with a low IQ, poor motor and language performance, and neuropsychological impairment.…”

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confidence: 99%

Normal Development of the Corpus Callosum and Evolution of Corpus Callosum Sexual Dimorphism in Infancy

Chang

Chiu

Yang

et al. 2017

J of Ultrasound Medicine

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Our study provides reference data on typical corpus callosum development in infants. In the fetal period and early infancy, the corpus callosum in female infants is thicker than that in male infants. From 3 months onward, the corpus callosum sexual dimorphism becomes insignificant throughout childhood. The evolvement of corpus callosum sexual dimorphism suggests that maternal factors may influence brain development.

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confidence: 99%

Normal Development of the Corpus Callosum and Evolution of Corpus Callosum Sexual Dimorphism in Infancy

Chang

Chiu

Yang

et al. 2017

J of Ultrasound Medicine

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“…Cunningham’s Manual of Practical Anatomy 3 was followed throughout the whole dissection procedure, taking care to preserve all the arteries, while sacrificing venae comitantes. Photographs were taken with a Canon EOS 7D Mark II DSLR and labeled using GoodNotes software.…”

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confidence: 99%

Upper limb arterial pattern: clinical correlation and embryological perspective

Sophia

Singh

et al. 2021

J. vasc. bras.

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Background Variations in the upper limb arterial pattern are commonplace and necessitate complete familiarity for successful surgical and interventional procedures. Variance in the vascular tree may involve any part of the axis artery of the upper limb, including the axillary artery and brachial artery or its branches, in the form of radial and ulnar arteries, which eventually supply the hand via anastomosing arches. Objectives To study the peculiarities of the arterial pattern of the upper limb and to correlate them with embryological development. Methods The entire arterial branching of forty-two upper limbs of formalin fixed adult human cadavers was examined during routine dissection for educational purposes, conducted over a 3-year period in the Department of Anatomy, Lady Hardinge Medical College, New Delhi. Results The study found: 1) One case in which a common trunk arose from the third part of the axillary artery, which immediately splayed into four branches (2.4%); 2) High division of the brachial artery into ulnar and radial arteries, in 3 cases (7.1%); 3) Pentafurcation of the brachial artery into ulnar, interosseus, radial, and radial recurrent arteries and a muscular twig to the brachioradialis in 1/42 cases (2.4%); 4) Incomplete Superficial Palmar arch in 3/42 cases (7.1%); and 5) Presence of a median artery in 2/42 case(4.8%) Conclusions This study observed and described the varied arterial patterns of the upper limb and identified the various anomalous patterns, supplementing the surgeon’s armamentarium in various surgical procedures, thereby helping to prevent complications or failures of reconstructive surgeries, bypass angiography, and many similar procedures.

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Prenatal ultrasound reassessment of the corpus callosum based on cortical connectivity information

Li,

Pan,

Sun

et al. 2024

Arch Med Sci

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IntroductionRoutine prenatal ultrasound assessment of the corpus callosum (CC) does not reflect information on fibrous connections. The primary purpose was to construct detailed reference ranges of quantitative characteristics of the foetal CC based on cortical connectivity information. Secondary goals were to examine for sex differences and assess the validity of the measurement technique for cases with CC dysplasia.Material and methodsPregnant women referred to a tertiary centre for sonographic examination were recruited to undergo a detailed foetal scan from 19 to 40 weeks. The foetal CC was divided into 5 distinct segments using the Hofer & Frahm classification technique. The thickness of each segment and the overall length of the CC were measured. Additionally, a segmental evaluation was conducted on partial agenesis of the CC. The inter- and intraobserver variability were assessed by interclass correlation coefficients. Regression analysis was used to determine the association between the biological measurements and gestational age.ResultsA total of 852 foetuses (403 males and 449 females) were included in the final analysis. Intra- and interobserver reliability coefficients ranged from 0.86 to 0.98 and 0.84 to 0.97, respectively. Reference ranges were established for the thickness and length of its segments. We observed that the biometric measurements of the foetal CC showed a curvilinear increase with gestational age. There was a statistically significant sex effect for the CC. At the average gestation age 29.6 weeks, the genu, anterior midbody, posterior midbody, and isthmus of male foetuses were 0.06280 mm, 0.04435 mm, 0.01731 mm, and 0.01556 mm, respectively, thicker than those of female foetuses, whereas the splenium of the female foetus was 0.06583 mm thicker than the male foetus.ConclusionsThe study uncovers distinct patterns of thickness and length growth in the foetal CC and establishes precise reference ranges. These findings can aid in evaluating normal brain development and conducting comprehensive assessments of CC abnormalities.

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Morphology of the corpus callosum in human fetuses

Cited by 3 publications

References 0 publications

Normal Development of the Corpus Callosum and Evolution of Corpus Callosum Sexual Dimorphism in Infancy

Normal Development of the Corpus Callosum and Evolution of Corpus Callosum Sexual Dimorphism in Infancy

Upper limb arterial pattern: clinical correlation and embryological perspective

Prenatal ultrasound reassessment of the corpus callosum based on cortical connectivity information

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