Is HE4 a useful endometrioma marker?

Area of Science:

• Gynecology
• Oncology
• Biochemistry

Background:

• Ovarian cysts are common, with endometriomas and benign cysts requiring accurate diagnosis.
• Cancer antigen 125 (CA 125) and human epididymal secretory protein E4 (HE4) are commonly used tumor markers.
• Laparoscopic surgery is a standard treatment for ovarian cysts.

Purpose of the Study:

• To evaluate the diagnostic utility of HE4 in differentiating benign ovarian cysts and endometriomas.
• To compare the trends of CA 125 and HE4 serum levels before and after laparoscopic surgery for ovarian cysts.

Main Methods:

• A prospective study involving 38 patients undergoing laparoscopic surgery for ovarian cysts (25 endometriomas, 13 benign cysts) and 26 healthy controls.
• Serum levels of CA 125 and HE4 were measured pre-operatively and one month post-operatively.

Main Results:

• CA 125 serum levels significantly decreased after endometrioma excision.
• No statistically significant decrease in HE4 serum levels was observed after surgery for endometriomas or benign cysts.

Conclusions:

• HE4 serum levels remain unchanged after laparoscopic surgery for endometriomas, suggesting it is not useful for diagnosing low-risk endometriomas.
• CA 125 levels decrease post-surgery in endometrioma patients.
• HE4 may have a role in distinguishing malignant from benign ovarian cysts, but not in diagnosing endometriomas.