Melanosis coli in a peritoneal dialysis patient: a case report Journal of Medical Case Reports Springer Nature Link I'm so sorry to post a poop picbut this looks black and I'm wondering if I should be concerned. : r AskDocs Don't Ignore If Your Stool Color Changes Suddenly Comment POOP and I'll send you the stool guide I use with my patients. Trust your gut. Follow @doctor.sethi for no BS gut science Victor Bar Stool in Black Finish with Dark Grey Faux Leather Maven Lane