Colorectal Endometriosis Presenting as Proctalgia and Rectal Bleeding

Dhaliwal, Amaninder J.; Bhatia, Taruna; Changela, Kinesh; Derhartunian, Garen; Moshenyat, Yitzchak; Anand, Sury

doi:10.14309/00000434-201510001-00398

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“…It is important to note that endoscopically obtained biopsy material is superficial and endometriosis usually involves the deeper layers of the bowel wall [3,10,11,12]. Tissue obtained by endoscopy often reflects chronic injury but may lack diagnostic endometriotic foci which could introduce the potential for misinterpretation and misdiagnosis [6,12,[13][14][15][16]. In addition, the endometriotic implants can promote secondary mucosal changes, which may resemble differential diagnoses, such as ischemic colitis, inflammatory bowel disease, or even neoplasm [4,12,16].…”

Section: Discussionmentioning

confidence: 99%

Catamenial rectal bleeding due to invasive endometriosis: a case report

et al. 2020

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Background: Although gastrointestinal involvement is the most common site for extra-genital endometriosis, deep infiltrative endometriosis, which affects the mucosal layer, is very rare. Case presentation: We present a case of a 41-year-old white woman with cyclic rectal bleeding. Magnetic resonance imaging was done, together with colonoscopy and histologic staining of biopsied samples, which led to the final diagnosis of intestinal invasive endometriosis with recto-sigmoid stricture. Our patient was treated symptomatically with stool softeners. Conclusion: This case provides a rare example of catamenial bleeding. It is important to keep invasive endometriosis on the differential diagnosis whenever a premenopausal woman has cyclical rectal bleeding.

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