What OB/GYN subspecialties specializes in the use of a hysteroscopy?

The OB/GYN subspecialty that specializes in the use of a hysteroscopy is called "Reproductive Endocrinology and Infertility" (REI). This field focuses on diagnosing and treating disorders related to reproduction and fertility.

To find this answer, you can follow these steps:

1. Start with a general understanding that a hysteroscopy is a diagnostic procedure used to examine the inside of the uterus.

2. Recognize that the field of obstetrics and gynecology (OB/GYN) deals with women's reproductive health, including pregnancy and childbirth.

3. Understand that within the field of OB/GYN, there are various subspecialties that focus on specific aspects of women's reproductive health.

4. Recognize that the subspecialty that deals with reproductive endocrinology and infertility may have expertise in using hysteroscopy as a diagnostic tool.

5. With this knowledge, you can conclude that the OB/GYN subspecialty that specializes in the use of a hysteroscopy is Reproductive Endocrinology and Infertility (REI).