Monodermal teratoma: Three case reports and review of literature

Figure 1 Ultrasound findings. A: Right ovarian echoless area with clear boundary; B: No color blood flow signal was found in the sac wall of the right ovarian anechoic region; C: Solid mass in the left adnexal area with clear boundary; D: Abundant color blood flow signals were seen around the solid mass in the left adnexal area.

Figure 2 Pathological findings. A: Histological section of the epidermoid cyst of the right testicle showing the structure of the cyst (hematoxylin & eosin × 1); B: The cyst wall is composed of squamous epithelium surrounding the lamellar keratin layer, and there is a large amount of keratin in the cyst cavity (hematoxylin & eosin × 10); C: Histological section of the right ovarian cyst showed a large amount of thyroid follicular tissue (hematoxylin & eosin × 10); D: Histological sections of the left ovary showed a large amount of thyroid follicular tissue (hematoxylin & eosin × 10)