A hysteroscopy is classified as minor surgery, though many people experience it more like a quick medical procedure than a traditional operation. The distinction depends on whether the hysteroscopy is diagnostic (looking only) or operative (treating a problem), but even the operative version rarely requires an overnight hospital stay.
Diagnostic vs. Operative Hysteroscopy
There are two types of hysteroscopy, and they differ significantly in what happens during the appointment. A diagnostic hysteroscopy is purely visual. A thin, lighted scope called a hysteroscope is passed through the cervix so your doctor can see the inside of your uterus. This is often done to investigate abnormal bleeding, repeated miscarriages, or unusual imaging results. No tissue is removed, and some diagnostic hysteroscopies can be performed right in a doctor’s office.
An operative hysteroscopy goes a step further. Small surgical instruments are passed through the hysteroscope to treat problems found inside the uterus. This can include removing polyps, cutting away fibroids that bulge into the uterine cavity, or breaking up scar tissue (adhesions). Operative hysteroscopy is the version that is formally considered minor surgery, though both types involve inserting an instrument through the cervix and into the uterus.
The American College of Obstetricians and Gynecologists recommends direct hysteroscopic removal for polyps over blind removal techniques, which are associated with inaccurate detection and incomplete removal. For fibroids, hysteroscopic myomectomy is widely used to treat abnormal bleeding caused by fibroids growing along the inner wall of the uterus.
What Happens During the Procedure
The uterus is a collapsed space, so the first step is inflating it with a liquid or gas so the surgeon can see. Carbon dioxide is sometimes used for diagnostic hysteroscopy, but operative procedures use fluid, typically normal saline, because it allows continuous irrigation to maintain a clear view even if there’s some bleeding. The fluid also makes it possible to use electrosurgical instruments that cut or cauterize tissue.
Operative hysteroscopes are larger than diagnostic ones and have a working channel through which small instruments can be passed. For more complex procedures like fibroid removal, a device called a resectoscope is used. Smaller-diameter scopes with narrow working channels (a few millimeters wide) can handle simpler tasks like small polyp removal.
For premenopausal women with regular cycles, diagnostic hysteroscopy is ideally scheduled during the first half of the menstrual cycle, after your period ends. This timing gives the best view of the uterine lining. If you have unpredictable periods, you can generally be scheduled at any time, though active bleeding can make visualization difficult.
Anesthesia Options
The type of anesthesia depends on what’s being done and where it’s being done. A simple diagnostic hysteroscopy performed in an office setting may use only local anesthesia or no anesthesia at all. Small fibroids under about 1.5 to 2 centimeters have been removed in office settings without anesthesia in some cases.
Operative hysteroscopy, especially for larger fibroids or multiple growths, has traditionally been performed under general anesthesia in an operating room. Over the past decade, though, there’s been a shift toward performing these procedures under sedation rather than full general anesthesia. With procedural sedation, you receive medication through an IV that keeps you deeply relaxed and pain-free without being fully unconscious. This approach allows the procedure to be done in an outpatient setting, and recovery from the anesthesia itself is faster.
Recovery and What to Expect After
Most people go home the same day. You can expect light vaginal bleeding and mild cramping for one to two days afterward. Normal activity and a regular diet can typically resume right away unless your doctor gives you specific instructions otherwise.
The main restriction is avoiding sex and douching for about two weeks after the procedure. This gives the cervix and uterine lining time to heal and reduces the risk of infection.
Risks and Complication Rates
Hysteroscopy is considered safe, but like any procedure that enters the uterus, it carries some risk. For operative hysteroscopy specifically, the most common complications and their approximate rates are:
- Bleeding: occurs in about 2.4% of cases
- Uterine perforation: the instrument passes through the uterine wall, occurring in 0.8 to 1.5% of cases
- Cervical laceration: a tear to the cervix, reported in 1 to 11% of cases depending on the study
- Fluid overload: occurs in fewer than 5% of cases, when too much of the distension fluid is absorbed into the bloodstream
Uterine perforation sounds alarming, but it is usually recognized immediately and often heals on its own without further intervention. Fluid overload is uncommon but can be serious, which is why the surgical team closely monitors how much fluid goes in and how much comes back out during the procedure.
Diagnostic hysteroscopy, because it doesn’t involve cutting or removing tissue, carries lower complication rates than operative hysteroscopy across all of these categories.
How It Compares to Other Uterine Surgeries
What makes hysteroscopy “minor” is that there are no incisions on your body. The hysteroscope enters through the vagina and cervix, which is the natural pathway into the uterus. Compare this to a myomectomy done through an abdominal incision or a laparoscopic procedure that requires small cuts in the abdomen and inflation of the abdominal cavity with gas. Hysteroscopy avoids all of that, which is why recovery is measured in days rather than weeks and why most people return to normal activities almost immediately.
That said, “minor surgery” is still surgery. It involves surgical instruments, often takes place in an operating room, may require anesthesia, and carries real (if small) risks of complications. If your doctor has recommended a hysteroscopy, it’s reasonable to treat it with the same preparation you’d give any surgical procedure while also knowing that the vast majority of people tolerate it well and recover quickly.