Hi! Good evening. I am Dr Shareef answering your query. Yes, you are right. The lump under skin near the surgery wound could be a hematoma, but it could also indicate an incisional hernia depending on the site of surgery regarding which you did not give any indication. I would rather advise you to take appointment with a general surgeon preferably the surgeon who operated upon you, and get it assessed by him for further investigation and management. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.