Immediate Medical Evaluation

• Urgently consult a gynecologist for postmenopausal bleeding and uterine mass.
• A thorough clinical examination and history are essential.

Diagnostic Investigations

• Perform a pelvic ultrasound to assess the uterine mass.
• Consider an endometrial biopsy or hysteroscopy to exclude malignancy.
• Conduct blood tests, including a complete blood count.

Symptom Management and Monitoring

• Manage loose motions and lower back pain with hydration and pain relief.
• Monitor for signs of infection or worsening symptoms.

Possible Treatment Options

• Treatment may range from medical management to surgical intervention based on diagnosis.
• Oncology referral is necessary if malignancy is detected.

Follow-up and Support

• Ensure close follow-up to monitor treatment response.
• Provide emotional support and counseling due to the patient's age and symptoms.