Abstract Objectives: The aim of our analysis was to retrospectively analyze the course of pregnancy and delivery in the group of Polish women, aged from 15 to 25. Material and methods: We analyzed 345 woman, aged 15-25, treated in the KMMPiG ICZMP in Lodz between the years 2000 and 2006. The investigated patients were divided into two groups: 15-18-year-olds constituted the research group and 19-25-year-olds, that is the control group. Factors which have been taken into consideration included: pregnancy history, ultrasound examinations, delivery mode, birth weight and the APGAR score. Results: 62.7% (n=69) delivered naturally, 30.9% (n=34) by caesarean section and 6.36% (n=7) by forceps in the group of adolescents and 67.6% (n=159), 32.4% (n=71) and 2% (n=5) (p=0.379; OR 1.27) in the control group. 25.5% (n=26) of the adolescent women (<37 week of gestation, WG) and 20.7% (n=48) of the controls (p=0.39; OR 1.31) had a pre-term delivery. There were 3,9% multiparas in the group of teenagers and 20.7% among adolescents (p =0,001). Fetal malformations were diagnosed prenatally in 13,7% (n=14) of newborns delivered by adolescents mothers and 11.6% (n=27) in the control group (p=0.591; OR 1.21). Conclusions: Despite the dangers connected with the young age of the mother, the results of this study allow us to state that teenage pregnancy usually has a correct course and does not differ significantly from the pregnancy of an adult woman.