Highlights
Uterine laceration is extremely rare and little known, however it sometimes causes massive intraperitoneal bleeding and has poor prognosis.
Inner myometrial laceration may be caused by intrapartum physical stress, whereas uterine laceration in relatively early pregnancy might be occurred by tissue inadaptable for uterine enlargement.
To diagnosis uterine laceration in early pregnancy is quite difficult because of the absence of specific clinical findings.
Not only uterine rupture but also uterine laceration should be considered, and exploratory laparotomy should be performed appropriately when hemoperitoneum is strongly suspected.