[Abnormal twin pregnancy--early resorption of a single fetus in a twin pregnancy pregnancy].

Introduction: Twin pregnancy presents a condition of development of two fetuses in the uterus and can be monozygotic (single ovum) and dizygotic (two ova). In case of fertilization and segmentation of one ovum monozygotic twins are produced, while in case of fertilization of two ova, which can originate from one or two Graff follicles, dizygotic twins are developed. The ratio of twin and single pregnancies is 1:89 (according to Hellin's law) (1).

[Perineal endometriosis at the site of an episiotomy scar].

This study presents a case of vaginoperineal histologically verified endometriosis at the site of episiotomy scar in a 40-year female subject, 17 years after delivery. Apart from episiotomy during delivery manual revision of the uterus was performed and the cervical rupture managed. Residue symptoms occurs 8 months after the first surgical excision.

[Breech presentation in multiple pregnancy].

A retrospective analysis of the ten-year experience with the delivery of twins in breech presentation was performed in this paper. Out of 17,300 deliveries there were 173 deliveries of twins which accounted for 1%. From that number there were 99 (57.