The majority of patients with uterine leiomyoma remain asymptomatic for a long time; they are usually found incidentally on imaging or examined after patients start having symptoms. Studies have shown that 7 to 40% of premenopausal patients with leiomyoma may witness regression of fibroids over 6 months to 3 years.  At menopause most fibroids will start to shrink as menstrual cycles stop and hormone levels wane.  Common complications of uterine leiomyoma include:    Dysmenorrhea Dyspareunia Leiomyoma degeneration or torsion Transcervical prolapse Miscarriage Less common complications of uterine leiomyoma include:    Venous compression Polycythemia from autonomous production of erythropoietin Hypercalcemia from autonomous production of parathyroid hormone-related protein Hyperprolactinemia
What is the explanation of Leiomyoma, including its natural progression, possible complications, and prognosis?
<|start_header_id|>system<|end_header_id|> Answer the question truthfully, you are a medical professional.<|eot_id|><|start_header_id|>user<|end_header_id|> This is the question: What is the explanation of Leiomyoma, including its natural progression, possible complications, and prognosis?<|eot_id|><|start_header_id|>assistant<|end_header_id|> The majority of patients with uterine leiomyoma remain asymptomatic for a long time; they are usually found incidentally on imaging or examined after patients start having symptoms. Studies have shown that 7 to 40% of premenopausal patients with leiomyoma may witness regression of fibroids over 6 months to 3 years.  At menopause most fibroids will start to shrink as menstrual cycles stop and hormone levels wane.  Common complications of uterine leiomyoma include:    Dysmenorrhea Dyspareunia Leiomyoma degeneration or torsion Transcervical prolapse Miscarriage Less common complications of uterine leiomyoma include:    Venous compression Polycythemia from autonomous production of erythropoietin Hypercalcemia from autonomous production of parathyroid hormone-related protein Hyperprolactinemia<|eot_id|>