An Infected Urachal Cyst With Umbilical Granuloma in an Adult Patient.

The urachus, an embryonic organ associated with the bladder, typically undergoes degeneration shortly after birth. Inadequate closure of the urachus can result in urachal malformations, with the most common being a urachal cyst. Failure to promptly identify and address this condition can lead to complications such as sepsis, fistula development, and cyst rupture, mimicking symptoms of peritonitis.

Sex Differences in Human Brain Structure at Birth.

Background: Sex differences in human brain anatomy have been well-documented, though remain significantly underexplored during early development. The neonatal period is a critical stage for brain development and can provide key insights into the role that prenatal and early postnatal factors play in shaping sex differences in the brain.

Methods: Here, we assessed on-average sex differences in global and regional brain volumes in 514 newborns aged 0-28 days (236 birth-assigned females and 278 birth-assigned males) using data from the developing Human Connectome Project.

Using Organoids to Model Sex Differences in the Human Brain.

Sex differences are widespread during neurodevelopment and play a role in neuropsychiatric conditions such as autism, which is more prevalent in males than females. In humans, males have been shown to have larger brain volumes than females with development of the hippocampus and amygdala showing prominent sex differences. Mechanistically, sex steroids and sex chromosomes drive these differences in brain development, which seem to peak during prenatal and pubertal stages.

Fetal brain growth and infant autistic traits.

Background: Structural differences exist in the brains of autistic individuals. To date only a few studies have explored the relationship between fetal brain growth and later infant autistic traits, and some have used fetal head circumference (HC) as a proxy for brain development. These findings have been inconsistent.