Underlying Causes
Endometrial cancer occurs when cells in the endometrium develop mutations in their DNA. These genetic changes turn normal, healthy cells into abnormal cells that grow and multiply out of control. While the exact cause of these mutations is not always clear, researchers have identified that hormonal imbalances significantly fuel the growth of these cells. Specifically, high levels of estrogen relative to progesterone can stimulate the thickening of the uterine lining, increasing the likelihood of cancerous changes.

Risk Factors
Several factors can increase the risk of developing this condition. Most relate to the balance of hormones in the body. Risk factors include:

• Hormonal changes: Conditions or therapies that increase the amount of estrogen, such as taking estrogen-only hormone therapy after menopause.
• Obesity: Adipose (fat) tissue converts other hormones into estrogen, which can increase risk.
• Menstrual history: Starting menstruation at an early age or entering menopause later in life increases the total lifetime exposure to estrogen.
• Never having been pregnant: Pregnancy temporarily shifts the hormonal balance towards progesterone.
• Age: The risk increases as women get older.
• Genetics: Lynch syndrome, an inherited disorder, significantly increases the risk of endometrial and other cancers.
• Tamoxifen use: This drug, used for breast cancer, can act like estrogen in the uterus.

Prevention
While not all cases can be prevented, certain steps may lower the risk. Maintaining a healthy weight is one of the most effective strategies because it helps regulate hormone levels. Using oral contraceptives (birth control pills) for several years has been shown to reduce the risk of endometrial cancer, and this protection can last for years after stopping the pills. Managing diabetes and discussing the risks and benefits of hormone therapy with a doctor are also important preventive measures. For those with a family history of Lynch syndrome, genetic counseling and regular screening are recommended.

Signs and Symptoms
The most common and significant symptom of endometrial cancer is abnormal vaginal bleeding. Detecting this early often leads to a diagnosis at a curable stage. Symptoms to watch for include:

• Vaginal bleeding after menopause (any amount is considered abnormal).
• Bleeding between periods or prolonged periods in premenopausal women.
• Watery or blood-tinged vaginal discharge.
• Pelvic pain or cramping.
• Pain during sexual intercourse.
• Unexplained weight loss.

Diagnostic Tests
Doctors typically begin with a pelvic examination to check for abnormalities in the uterus, vagina, and surrounding tissues. If cancer is suspected, further testing is required to confirm the diagnosis. Common diagnostic tools include:

• Transvaginal Ultrasound: A wand-like device uses sound waves to create images of the uterus and check the thickness of the endometrium.
• Endometrial Biopsy: This is the most common test. A thin tube is inserted through the cervix to collect a small sample of tissue from the uterine lining for laboratory analysis.
• Hysteroscopy: A tiny telescope is inserted into the uterus, allowing the doctor to examine the lining and take tissue samples (dilation and curettage or D&C) if a standard biopsy is inconclusive.

Differential Diagnosis
Clinicians must rule out other conditions that cause similar symptoms before confirming endometrial cancer. These may include uterine fibroids, endometrial polyps, endometrial hyperplasia (thickening of the lining), or infections of the reproductive tract. While a Pap test is crucial for cervical health, it does not reliably detect endometrial cancer.

Surgical Options
Surgery is the primary treatment for endometrial cancer and is often curative for early-stage disease. The standard procedure is a hysterectomy, which involves the removal of the uterus and cervix. In many cases, the ovaries and fallopian tubes are also removed (salpingo-oophorectomy) to reduce hormone production and prevent spread. Surgeons may also remove pelvic lymph nodes to check if the cancer has spread beyond the uterus. Minimally invasive techniques, such as laparoscopic or robotic surgery, are frequently used to reduce recovery time.

Medical Treatments
Additional treatments may be recommended based on the stage and grade of the cancer. These include:

• Radiation Therapy: Uses high-energy beams to kill cancer cells. It may be delivered externally or internally (brachytherapy) using a device placed in the vagina.
• Chemotherapy: Uses drugs to kill cancer cells, typically reserved for advanced or recurrent cancer.
• Hormone Therapy: Involves taking medications to block hormones that cancer cells need to grow, often used for advanced cancer or when surgery is not an option.
• Immunotherapy and Targeted Therapy: Newer treatments that help the immune system fight cancer or attack specific vulnerabilities in cancer cells, particularly for cancers with specific genetic markers.

Monitoring and Follow-Up
After active treatment, regular follow-up appointments are essential. These visits typically occur every few months for the first few years. They involve pelvic exams and symptom reviews to monitor for recurrence. Doctors focus on managing side effects of treatment, such as menopause symptoms induced by surgery, and supporting overall health through diet and exercise.

When to Seek Medical Care
It is vital to consult a healthcare provider immediately if you experience any vaginal bleeding after menopause, as this is a primary warning sign. Premenopausal women should seek care for changes in menstruation, such as very heavy flow or bleeding between cycles. Prompt medical attention is also needed for persistent pelvic pain or pain during intercourse. Regular check-ups are important even if no symptoms are present, but any new or worsening symptoms should be evaluated right away.

Severity and Disease Course
Endometrial cancer is classified into stages ranging from I to IV. In Stage I, the cancer is confined to the uterus, while in Stage IV, it has spread to distant organs. The severity is also determined by the grade of the cancer, which indicates how aggressive the cells appear under a microscope. Most cases are diagnosed at an early stage (Stage I) because the symptom of abnormal bleeding prompts early medical attention. When confined to the uterus, the condition is often less severe and highly treatable.

Prognosis
The long-term outlook for endometrial cancer is generally very positive. The five-year survival rate is high, especially for localized cancer. However, the prognosis can be influenced by several factors:

• Stage at diagnosis: Early detection significantly improves survival chances.
• Cell type: Certain aggressive types of endometrial cancer (like serous or clear cell carcinoma) have a poorer outlook than the common endometrioid type.
• Overall health: Conditions like obesity or diabetes can complicate surgery and recovery, potentially affecting outcomes.

Complications
Complications can arise from the cancer itself or its treatment. Surgery carries risks such as infection or bleeding. Removing lymph nodes can sometimes lead to lymphedema, a swelling in the legs. If the ovaries are removed, premenopausal women will enter surgical menopause, leading to hot flashes and other hormonal symptoms. In advanced stages, the cancer can impact the function of the bladder, bowel, or other organs.

Daily Activities and Recovery
The impact on daily life largely depends on the extent of treatment. Recovering from a hysterectomy requires several weeks of rest, during which heavy lifting and strenuous activity must be avoided. Fatigue is common, especially if radiation or chemotherapy is part of the treatment plan. Many women return to their normal routines within a few months, but pacing oneself is important.

Emotional and Social Health
A diagnosis of cancer can cause anxiety and fear. For many, the removal of the uterus and ovaries affects their sense of identity or sexuality. Surgical menopause can bring sudden mood changes and physical symptoms that affect intimacy. Support groups and counseling can be valuable resources for navigating these emotional changes. Open communication with partners and healthcare providers about sexual health is encouraged.

Questions to Ask Your Healthcare Provider
Being prepared for appointments can help you understand your care plan. Consider asking:

• What is the specific stage and grade of my cancer, and what does that mean for my outlook?
• Will I need treatments other than surgery, such as radiation or chemotherapy?
• How will this treatment affect my daily life and ability to work?
• What are the signs of recurrence I should watch for?
• Are there genetic implications for my family members?
• How will treatment affect my sexual function and hormonal health?
• Am I a candidate for minimally invasive surgery?

Q: Is endometrial cancer hereditary?
A: Most cases are not hereditary, but a small percentage are linked to inherited conditions like Lynch syndrome. If you have a strong family history of colon or uterine cancer, genetic testing may be recommended.

Q: Can a Pap smear detect endometrial cancer?
A: No, a Pap smear is designed to screen for cervical cancer. While it occasionally picks up endometrial cells, it is not a reliable test for endometrial cancer. Any abnormal bleeding requires specific diagnostic tests like a biopsy.

Q: Is endometrial cancer the same as uterine cancer?
A: Endometrial cancer is the most common type of uterine cancer. It starts in the lining. A much rarer type, uterine sarcoma, starts in the muscle of the uterus, but "endometrial cancer" is often what people mean when they say uterine cancer.

Q: Can I get endometrial cancer if I am young?
A: While it is most common in postmenopausal women, it can occur in younger women. Risk factors like obesity or genetic syndromes can increase the likelihood of developing it at a younger age.

Q: Does hormone replacement therapy cause this cancer?
A: Estrogen-only therapy without progesterone can increase the risk in women who still have a uterus. Combined hormone therapy (estrogen plus progesterone) does not carry the same risk for the endometrium.