Could be a black skin like thing appearing in stool be related to stomach cancer?
Patient: HiMy doctor has made for me an colonoscopy test this morning and so I still have a bright blood in stool. But I have noticed Black skin in my stool looks like apple skin (I did not eat apple) is that a blood and should I ask my doctor for anther test like endoscopy to see if I have a stomach cancer? Doctor: Hi, dearI have gone through your question. I can understand your concern. Bright bleeding in stool comes from lower gastrointestinal tract. If you have dark bleeding then it comes from stomach.  Still you should go for endoscopy to search the cause of bleeding.  Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health.