The digestive involvement of endometriosis accounts for up to 20-25% of deep localisations. Precise mapping of digestive lesions is essential in order to plan surgery and specialized teams. The aim of this study is to assess the contribution of the MRI-coloscan couple in the preoperative assessment of digestive endometriosis.
We analyzed 45 files of patients referred for suspected digestive endometriosis. They had all undergone a preoperative MRI and coloscan associated with surgery throughout the year. We first compared the data collected in imaging, and then compared the synthesis of this data with the surgical procedure performed.
35 patients required digestive surgery. 24 of 45 files were concordant in MRI and coloscanner. Data from MRI alone matched with surgery in 69% of cases, against 84% for the coloscan. The synthesis allowed a concordance of 89%. 25 segmental resections, 2 discoid and 16 shaving were performed. The use of coloscan made up for nine extra cases : the detection of four additional cases of multifocality, a single undiagnosed case of a deep lesion, and allowed to specify the depth of the involvement in four cases. On the contrary, the MRI was correct compared to the CT in four cases. The presence of a digestive surgeon was necessary in 53% of cases.
In the era of ​​imaging staging, it would seem interesting to turn towards a subclassification of the digestive involvement of endometriosis in order to decide which surgery to perform. In our experience, the coloscan is a useful complement of MR, especially to assess the depth of involvement and the multifocality.

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