Hello! Thank you for the query. This lump when appears with the wound is most likely caused by anal fissure. It is very common that with the fissure upward there is a small lump. The other possibility is that this is hemorrhoid with thrombus (only such hemorrhoid can be palpated and is painful). Both hemorrhoid and fissure can cause fresh blood in the stool. You should have colonoscopy performed as in some cases such lump can be a small rectal polyp, which should be removed and tested for cancer. To get rid of fissure or hemorrhoids you should: have hot baths with Quercus Cortex after every bowel movement keep this area clean and dry get rid of constipations do not push hard on stool ask your doctor about Nitroglycerin gel and Xyocaine gel Such treated fissure should disappear in weak or so. Hope this will help. Regards.