Spatial distribution of Pb and Zn in soils under native vegetation in Southeast Brazil.

Heavy metals can play an important biological role as micronutrients but also as potentially toxic elements (PTEs). Understanding the natural concentrations of PTEs-Pb and Zn included-in soils allows for the identification and monitoring of contaminated areas and their role in environmental risk assessment. In this study, we aim to determine semi-total or natural and available concentrations of Pb and Zn in topsoils (0-20 cm depth) from 337 samples under native vegetation in the State of Minas Gerais, Brazil.

[Spontaneous Hemoperitoneum in Pregnancy].

Endometriosis is a benign, estrogen-dependent chronic disorder. Pregnancy is considered to have a positive effect on endometriosis due to blockage of ovulation; however, evidence is emerging on the role of endometriosis not only in infertility but also in poor pregnancy outcomes. We present the case of a pregnant woman admitted for sudden and severe abdominal pain at 34 weeks gestation.