Endometrioma

(A) Transvaginal ultrasound image of the right adnexa showing an endometrioma. The homogeneous echo pattern of the cyst contents (ie, "ground-glass" appearance) is characteristic of an endometrioma (short arrow); the cystic nature of the endometrioma is also indicated by the post-cyst enhancement (long arrow).

(B) Transvaginal ultrasound with color Doppler image of the left adnexa showing a benign endometrioma of the left ovary viewed with color Doppler imaging. No flow within the cyst can be demonstrated; however, blood flow is demonstrated within the wall of the cyst in the ovarian tissue itself (long arrow). Also identified within the left ovary is a small follicle (short arrow).