Endometriosis in patients with chronic pelvic pain: is staging predictive of the efficacy of laparoscopic surgery in pain relief?

BACKGROUND/AIMS

Endometriosis is considered an important cause of chronic pelvic pain. Despite its high prevalence, controversy still exists regarding the true association between the extent of endometriosis and the severity of symptoms. We conducted this prospective study to investigate the association between the stage of endometriosis and type and severity of pain, and to evaluate the efficacy of laparoscopic surgery in pain relief.

METHODS

Ninety-five patients complaining of chronic pain were diagnosed with endometriosis and were treated with laparoscopic surgery. The severity of pain was assessed in patients with an endometriosis AFS (American Fertility Society) score less than 16 (group 1) and those with an AFS score greater than or equal to 16 (group 2), preoperatively and 6 months after surgery, using a visual pain scale. Any reduction in pain scores by 2 points or more was considered to be an improvement.

RESULTS

Dysmenorrhea and deep dyspareunia, were significantly more frequent in patients of group 2. Preoperative pain scores were significantly higher for dysmenorrhea (p = 0.0022) and deep dyspareunia (p < 0.0001) but not for non-menstrual pain in group 2. Deep dyspareunia was correlated with the presence of dense pelvic adhesions. After surgery, dysmenorrhea improved in 43% of cases in group 1, vs. 66% of cases in group 2 (p = 0.0037). For deep dyspareunia, improvement was reported by 33% in group 1, vs. 67% in group 2 (p = 0.074). Improvement in non-menstrual pain was not significantly different between the two groups (67% vs. 56%).

CONCLUSIONS

Advanced endometriosis is more frequently related to dysmenorrhea and deep dypareunia in comparison to early disease. Laparoscopic surgery may offer relief or improvement in the majority of patients with endometriosis and chronic pelvic pain. Cases with advanced disease seem to benefit the most.

Laparoscopic management of patients with endometriosis and chronic pelvic pain

Endometriosis has been traditionally included among the most important causes of chronic pelvic pain (CPP) in women of reproductive age. The main clinical manifestations of endometriosis are dysmenorrhea, dyspareunia, and chronic nonmenstrual pain. Despite the high prevalence of endometriosis in women suffering from CPP, controversy still exists regarding the true association between the stage and extent of this peculiar disease and the severity of pain. Over the last decade, advances in endoscopic technology have enabled gynecologic surgeons to recognize many atypical appearances of the endometriotic implants not known to exist before, thus allowing their complete excision or destruction. Laparoscopic surgery may offer considerable relief in patients with endometriosis and CPP. Although cases with advanced endometriosis seem to benefit the most, we also support surgical treatment in patients with early endometriosis diagnosed using laparoscopy, as many will experience improvement in their symptoms.