Case 64

Clinical Presentation
A 34-year-old woman with recurrent pelvic pain.
Imaging Findings

(A) Transvaginal sonographic image of the left adnexa shows an adnexal mass (arrow). It is hypoechoic with uniform low-level echoes. There is distal acoustic enhancement (asterisk). The wall is well formed. (B) Power flow ultrasound image of the mass in Figure A shows absence of flow within the lesion.
Differential Diagnosis
• Endometrioma: A cystic lesion with low-grade internal echoes is characteristic.
• Hemorrhagic ovarian follicle:
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