Influence of Cyst Size on Ovarian Reserve after Unilateral Laparoscopic Ovarian Cystectomy for Endometrioma and Ovarian Mature Teratoma

Author(s): Hee-Suk Chae

Background: The present study is aimed to investigate the influence of ovarian cyst size on serum anti-Müllerian hormone levels after laparoscopic ovarian cystectomy in women with endometrioma and ovarian mature teratoma.

Methods: From March 2017 to December 2018, we retrospectively studied eighty-one patients who underwent unilateral laparoscopic cystectomy for endometrioma (n = 41, endometrioma group) and ovarian mature cystic teratoma (n = 40, teratoma group). Serum anti-Müllerian hormone (AMH) levels were measured preoperatively and 1 month after surgery.

Results: The rate of decrease in serum AMH levels after laparoscopic cystectomy was significantly higher in the endometrioma group than in the teratoma group (0.35 ± 0.04% vs. 0.19 ± 0.04%, p = 0.013). In patients with mature cystic teratoma, a statistically significant correlation between the rate of decrease in serum AMH levels and cyst size was observed (r = 0.391, p = 0.013); the rate of decrease in serum AMH levels after surgery was significantly higher in the > 5.13 cm subgroup than in the ≤ 5.13 cm subgroup (p = 0.006).

Conclusions: Laparoscopic cystectomy for endometriomas may result in a more significant damage to the ovarian reserve compared with that for ovarian mature cystic teratomas. Cyst diameter and reduced ovarian reserve after surgery were not correlated in patients with endometriomas, whereas a significant correlation was observed in patients with ovarian mature teratomas. The decrease in AMH levels was more evident in patients with a mature teratoma > 5.13 cm.

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