• Jin-hua Leng, Jing-he Lang, Yi Dai, Hua-jun Li, and Xiao-yan Li.
• Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100730, China.
• Zhonghua Fu Chan Ke Za Zhi. 2007 Mar 1; 42 (3): 165-8.

ObjectiveTo study the relationship between pain symptoms and the clinico-pathological features of pelvic endometriosis (EM).MethodsOne hundred thirty patients with laparoscopic diagnosis of EM were studied retrospectively and the relationship between pain symptoms including dysmenorrhea, chronic pelvic pain (CPP), dyspareunia and dyschezia and the anatomical features of pelvic endometriosis were evaluated.ResultsOne hundred (76.9%) patients with pain symptoms and 30 (23.1%) without were included in this study. The number of patients with mild, moderate and severe dysmenorrhoea was 27 (20.8%), 41 (31.5%), and 32 (24.6%), respectively. Patients with dyspareunia, CPP and dyschezia were 46 (35.4%), 45 (34.6%) and 67 (51.5%), respectively. Compared with patients without dysmenorrhea, the proportion of deep utero-sacral nodules (45.0% vs 13.3%, P=0.00), recto-vaginal nodules (16.0% vs 0, P=0.01), complete obliteration of cul-de sac (41.0% vs 10.0%, P=0.00), and lesions of DIE (51.0% vs 16.7%, P=0.00) was significantly increased in patients with dysmenorrhea. The severity of dysmenorrhea was positively correlated with nodules in uterosacral ligaments (P=0.005, r=0.302), and invasive depth of uterosacral ligaments (P=0.016, OR=5.085). Among patients with endometrioma, significantly more moderate to severe adhesions were found in patients with dysmenorrhea, compared with those patients without dysmenorrhea (29.1% vs 8.3%, P=0.029). Patients with CPP had more nodules in the utero-sacral ligaments (51.1% vs 30.6%, P=0.018) and DIE lesions (57.8% vs 35.3%, P=0.011), compared with those without. More nodules in the utero-sacral ligaments (46.3% vs 28.6%, P=0.028), recto-vaginal nodules (19.4% vs 4.8%, P=0.01), complete obliteration of cul-de sac (44.8% vs 22.2%, P=0.005) and DIE lesions (53.7% vs 31.7%, P=0.01) were found in patients with dyschezia, compared with those without. Nodules in the recto-vaginal pouch were an independent risk factor of dyspareunia.ConclusionPain symptoms including dysmenorrhea, dyspareunia, chronic pelvic pain, and dyschezia are remarkably related to endometriotic nodules at the posterior part of the pelvis or those with deep invasions.

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