**Core Concept**
Extra-uterine endometriosis refers to the presence of endometrial tissue outside the uterus, which can lead to various symptoms and complications. This condition is often associated with chronic pelvic pain, dysmenorrhea, and infertility. The exact cause of endometriosis is still unknown, but it is believed to be related to hormonal and genetic factors.

**Why the Correct Answer is Right**
Endometriosis is characterized by the growth of endometrial glands and stroma outside the uterus, which can lead to inflammation, scarring, and adhesions. The presence of endometrial tissue in ectopic locations can cause cyclic pelvic pain, dysmenorrhea, and dyspareunia due to the growth and shedding of endometrial tissue during menstruation. The most common sites for endometriosis include the ovaries, fallopian tubes, and pelvic peritoneum.

**Why Each Wrong Option is Incorrect**
**Option A:** Endometriosis is not typically associated with a family history of the disease. While there may be a genetic component, it is not a reliable predictor of risk.
**Option B:** The exact cause of endometriosis is still unknown, but it is not thought to be related to a viral or bacterial infection.
**Option C:** Endometriosis can cause a range of symptoms, including chronic pelvic pain, dysmenorrhea, and infertility, but it is not typically associated with an increased risk of ovarian cancer.

**Clinical Pearl / High-Yield Fact**
Endometriosis is often associated with a range of symptoms, including chronic pelvic pain, dysmenorrhea, and infertility. A thorough medical history and physical examination, combined with diagnostic imaging and laparoscopy, can help diagnose endometriosis and guide treatment.

**Correct Answer:** D