Interstitial pregnancy is among the most dangerous types of ectopic pregnan
cy. Four such pregnancies in three women were treated by three conservative
modalities with favorable results. A 10-week interstitial pregnancy was su
ccessfully treated by laparoscopic-guided local methotrexate (MTX) injectio
n into the gestational sac. Six years later the same woman had a repeat unr
uptured interstitial pregnancy at 9 weeks' gestation, with the gestational
sac located in the same location as the previous one. Laparoscopic cornuost
omy was performed. An asymptomatic woman in the eighth week of an interstit
ial pregnancy was treated with systemic MTX, but despite decreasing beta -h
uman chorionic gonadotropin levels, cornual rupture occurred. The patient w
as successfully treated by laparoscopic cornuostomy. The final patient was
admitted in hypovolemic shock and hemoperitoneum and was treated successful
ly for ruptured 8-week interstitial pregnancy by laparoscopic cornuostomy.