Sclerotherapy with 5% tetracycline is a simple alternative to potentially complex surgical treatment of ovarian endometriomas before in vitro fertilization  Jeffrey D Fisch, M.D., Geoffrey Sher, M.D.  Fertility and Sterility  Volume 82, Issue 2, Pages 437-441 (August 2004) DOI: 10.1016/j.fertnstert.2004.01.031

Figure 1 Transvaginal ultrasound of a left ovary with an echogenic cyst with the characteristic appearance of an endometrioma. Fisch. Sclerotherapy for endometriomas. Fertil Steril 2004. Fertility and Sterility 2004 82, 437-441DOI: (10.1016/j.fertnstert.2004.01.031)

Figure 2 Transvaginal ultrasound of the same left ovary 6 weeks posttherapy, showing resolution of the endometrioma. Fisch. Sclerotherapy for endometriomas. Fertil Steril 2004. Fertility and Sterility 2004 82, 437-441DOI: (10.1016/j.fertnstert.2004.01.031)