Which condition is noted to be more common in males based on ultrasound findings?

Pyelectasis, or renal pelvis dilation, is indeed observed to be more common in males based on ultrasound findings. This condition can be identified during prenatal ultrasounds, which are often used to assess various aspects of fetal development. The prevalence of pyelectasis in male fetuses is thought to be related to anatomical and hormonal differences between males and females that affect urinary tract development and function.

In contrast, conditions like duodenal atresia and congenital heart defects do not show a significant sex bias in their prevalence, although they can occur in both sexes. Short femur measurements can be affected by various factors, including gestational age and genetic conditions, and they also do not demonstrate a strong male predominance in ultrasound findings.

Overall, the association of pyelectasis with male fetuses is well-documented in prenatal imaging literature, making it an important consideration during fetal evaluation.