What are the causes of a positive pregnancy test after hysterectomy?

There are a few possible causes of a positive pregnancy test after hysterectomy:

Residual chorionic tissue: Small pieces of placental tissue may remain in the body after a hysterectomy. These can continue to produce hCG, the hormone that is detected by pregnancy tests. This is the most common cause of a positive pregnancy test after hysterectomy.

Ovarian pregnancy: In rare cases, an egg can be fertilized and implant in the ovary instead of the uterus. This can lead to a positive pregnancy test, even if the uterus has been removed.

Gestational trophoblastic disease: This is a rare condition that occurs when cells from the placenta continue to grow after the pregnancy has ended. It can cause a positive pregnancy test and other symptoms, such as vaginal bleeding and abdominal pain.

Hysteroscopic or laparoscopic surgery: These surgical procedures can cause changes in the cervix or uterus that can lead to a false-positive pregnancy test.

Human chorionic gonadotropin (hCG) injection: hCG is a hormone that is produced during pregnancy. If you have been receiving hCG injections as part of a fertility treatment, this could also lead to a positive pregnancy test.

If you have a positive pregnancy test after hysterectomy, it is important to see your doctor to rule out any potential causes.