Hematosalpinx (sometimes also hemosalpinx) is a medical condition involving bleeding into the fallopian tubes.

A hematosalpinx from a tubal pregnancy may be associated with pelvic pain and uterine bleeding. A gynecologic ultrasound will show the hematosalpinx. A hematosalpinx from other conditions may be painless but could lead to uterine bleeding.

A number of causes may account for a hematosalpinx, by far the most common being a tubal pregnancy. Blood may also escape into the peritoneal cavity leading to a hemoperitoneum. A hematosalpinx can also be associated with endometriosis or tubal carcinoma. Further, if menstrual blood flow is obstructed (cryptomenorrhea), caused for instance by a transverse vaginal septum, and gets backed up it may lead to a hematosalpinx.

Diagnosis may include, but is not limited to, ultrasound, magnetic resonance imaging (MRI) and laparoscopy.

Treatment is directed at the underlying condition and is usually surgical.