**6. Anthropometric characteristics of the fetuses**

**Distribution of lethal hydrocephalus by gender (sex ratio).** The genders were equally affected, but the mean weight of male fetuses (842.17 ± 115.2) was less than that of female fetuses (892.06 ± 101.1), without the difference being statistically significant (*u* = 0.51, *p* > 0.05).

**Age of the fetus.** The average pregnancy term in the entire study is 24 ± 0.45 gestational weeks. The fetal expulsion in two-thirds of the cases occurred before the 24th gestational week, with the smallest fetus being 13 gestational weeks (**Figure 1**).

**Fetus weight.** The average weight of the fetuses is 865.99 ± 809.8 g with a range of 23–3800 g. It is worth noting that 50 fetuses (44.2%) weigh less than the corresponding gestational age.
