Magnetic resonance imaging (MRI) can contribute to cost-effective management in women with suspected myomas or adenomyosis and can provide precise presurgical mapping prior to myomectomy or correction of mullerian duct anomalies. MRI is also valuable in patients with suspected adnexal masses that are not detected sonographically or where definitive diagnosis of juxtauterine myoma, cystic teratoma, or hemorrhagic mass may alter management.