Hello the Doctor! Whether tell or say, please, dangerously, when after operation...

[Natalia]

Hello the Doctor! Whether tell or say, please, dangerously when after operation, under a skin there is a thread which after 3 h month does not resolve (a dark blue thread 0, 5 sm it it is appeared through through a skin in the field of a seam). Thanks.

[Konstantin]

If has not got out outside and has not festered - not dangerously.