Thank you for asking Healthcare majic. My name is Dr Ehsan Ullah & I have gone through your query. you have mentioned that you had perianal abscess which you lanced. Ideally , lancing such Abscess by you is not good because of two reason. 1) Drainage or excision of such Abscesses is performed in the hospitals in a very clean n controlled environment with Scrubbing, Sterilization and infection control along with bleeding control. self lancing can lead to Transmission of the infection by your hand and also such lesions are located near Anus where passing stools or poor hygiene can cause severe infection to the already open wound 2) hospitals have every facility to deal any complication occurring during or after surgery , but at home you can t . you should complete your antibiotics , pain n inflammation relieving drugs and Consult your physician if you abscess is open and draining pus / secretion to deal with it promptly. and your other concern is that even after lancing , you still have lump so whether you should be concerned regarding that or not... well, answer is Yes if you have completed the course of drugs prescribed and it s still there then you should have a follow up visit. Hope this may help you. Let me know if anything not clear. Thanks.