This document discusses hysteroscopy, which is a minimally invasive surgical procedure that allows visualization of the cervical canal and uterine cavity through a hysteroscope. It provides information on the history of hysteroscopy, different types of hysteroscopes, distension media used, techniques for performing hysteroscopy, indications for diagnostic and therapeutic hysteroscopy, contraindications, and potential complications. The document is authored by Dr. Chaduvula Suresh Babu from the Department of OBGYN at GIMSR in Visakhapatnam, India.