A patient underwent surgery for ovarian mass diagnosed on ultrasound. The tumor markers were negative. At laparotomy peritoneal washings were taken and after thorough inspection of abdomen Ipsilateral salpingo-oophorectomy was performed. The lateral end of the pedicle is formed of

**Core Concept**
The question is testing the student's knowledge of the anatomical structures involved in ovarian surgery. Specifically, it requires understanding of the ligaments and blood vessels that support the ovary.

**Why the Correct Answer is Right**
The lateral end of the pedicle in an Ipsilateral salpingo-oophorectomy is formed by the infundibulopelvic ligament. This ligament is a fibromuscular structure that connects the ovary to the pelvic wall, and it contains the ovarian artery and vein. The infundibulopelvic ligament is a key structure in ovarian surgery, and knowledge of its anatomy is crucial for safe and effective removal of the ovary.

**Why Each Wrong Option is Incorrect**
**Option A:** The round ligament is a fibromuscular structure that connects the ovary to the labia majora, but it is not the primary structure forming the lateral end of the pedicle in an Ipsilateral salpingo-oophorectomy.

**Option B:** The ovarian ligament is a short fibromuscular structure that connects the ovary to the uterus, but it is not the primary structure forming the lateral end of the pedicle in an Ipsilateral salpingo-oophorectomy.

**Option D:** The suspensory ligament of the ovary (also known as the broad ligament) is a fold of peritoneum that supports the ovary, but it is not the primary structure forming the lateral end of the pedicle in an Ipsilateral salpingo-oophorectomy.

**Clinical Pearl / High-Yield Fact**
In ovarian surgery, it is essential to identify and ligate the infundibulopelvic ligament to prevent bleeding from the ovarian artery and vein. This is particularly important in cases where the ovarian mass is adherent to the pelvic wall.

**Correct Answer:** C. The infundibulopelvic ligament.

✓ Correct Answer: D. Infundibulopelvic ligament