Arnaud Fauconnier

BACKGROUND: Deeply infiltrating endometriosis (DIE) is recognized as a specific entity responsible for pain. The distribution of locations and their contribution to surgical management has not been previously studied. METHODS: Medical, operative and pathological reports of 241 consecutive patients with histologically proven DIE were analysed. DIE lesions were classified as: (i). bladder, defined as infiltration of the muscularis propria; (ii). uterosacral ligaments (USL), as DIE of the USL alone; (iii). vagina, as DIE of the anterior rectovaginal pouch, the posterior vaginal fornix and the retroperitoneal area in between, and (iv). intestine, as DIE of the muscularis propria. RESULTS: A total of 241 patients presented 344 DIE lesions: USL (69.2%; 238); vaginal (14.5%; 50); bladder (6.4%; 22); intestinal (9.9%; 34). The proportion of isolated lesions differed significantly according to the DIE location: 83.2% (198) for USL DIE; 56.0% (28) for vaginal DIE; 59.0% (13) for bladder DIE; 29.4% (10) for intestinal DIE (P < 0.0001). The total number of DIE lesions varied significantly according to the location (P < 0.0001). In 39.1% of cases (9/23) intestinal lesions were multifocal. Only 20.6% (seven cases) of intestinal DIE were isolated and unifocal. CONCLUSIONS: Multifocality must be considered during the pre-operative work-up and surgical treatment of DIE. We propose a surgical classification based on the locations of DIE. Operative laparoscopy is efficient for bladder, USL and vaginal DIE. However, indications for laparotomy still exist, notably for bowel lesions.

The relationship between chronic pelvic pain symptoms and endometriosis is unclear because painful symptoms are frequent in women without this pathology, and because asymptomatic forms of endometriosis exist. Our comprehensive review attempts to clarify the links between the characteristics of lesions and the semiology of chronic pelvic pain symptoms. Based on randomized trials against placebo, endometriosis appears to be responsible for chronic pelvic pain symptoms in more than half of confirmed cases. A causal association between severe dysmenorrhoea and endometriosis is very probable. This association is independent of the macroscopic type of the lesions or their anatomical locations and may be related to recurrent cyclic micro-bleeding in the implants. Endometriosis-related adhesions may also cause severe dysmenorrhoea. There are histological and physiopathological arguments for the responsibility of deeply infiltrating endometriosis (DIE) in severe chronic pelvic pain symptoms. DIE-related pain may be in relation with compression or infiltration of nerves in the sub-peritoneal pelvic space by the implants. The painful symptoms caused by DIE present particular characteristics, being specific to involvement of precise anatomical locations (severe deep dyspareunia, painful defecation) or organs (functional urinary tract signs, bowel signs). They can thus be described as location indicating pain. A precise semiological analysis of the chronic pelvic pain symptoms characteristics is useful for the diagnosis and therapeutic management of endometriosis in a context of pain.