That's a scar. Please go to a regular hospital. I left a scar after the operation. I did it in the nuclear medicine department of the provincial hospital. Mine is longer, and yours is only one centimeter. It doesn't seem to cost much. As long as you cooperate with the doctor, it should be ok. This is not a complicated problem. Please don't be nervous. The provincial hospital is on Hongqi Street, and the nuclear medicine department is on the fourth floor of the outpatient department. There is a director Guo who is very kind to him, and I used to be his patient. I hope this helps.