In a normal<unk> , the fertilized egg enters the uterus and settles into the uterine lining where it has plenty of room to divide and grow. About 1% of<unk> es are in an<unk>  location with implantation not occurring inside of the womb, and of these 98% occur in the Fallopian tubes. In a typical<unk> , the embryo does not reach the uterus, but instead adheres to the lining of the Fallopian tube. The implanted embryo burrows actively into the tubal lining. Most commonly this invades vessels and will cause bleeding. This bleeding expels the implantation out of the tubal end as a tubal abortion. Some women thinking they are having a miscarriage are actually having a tubal abortion. There is no inflammation of the tube in<unk> . The pain is caused by prostaglandins released at the implantation site, and by free blood in the peritoneal cavity, which is locally irritant. Sometimes the bleeding might be heavy enough to threaten the health or life of the woman. Usually this degree of bleeding is due to delay in diagnosis, but sometimes, especially if the implantation is in the proximal tube (just before it enters the uterus), it may invade into the nearby sampson artery, causing heavy bleeding earlier than usual. If left untreated, about half of<unk> es will resolve without treatment. These are the tubal abortions. The advent of methotrexate treatment for<unk>  has reduced the need for surgery; however, surgical intervention is still required in cases where the Fallopian tube has ruptured or is in danger of doing so. This intervention may be laparoscopic or through a larger incision, known as a laparotomy.
Ectopic pregnancy
Ovarian torsion
Ovarian cyst
Endometritis
Fallopian tube cancer
Epithelial ovarian tumors
Salpingitis
Endometriosis