My doctor cut out my pilonidal cyst 10 days ago and cauterized it shut. i've had pain and a lump by the cut for 2 days. could it have tunneled?

?infection: I would return to the doctor to make sure you do not have an infection that needs to be treated.

It is possible: As a dermatologist i don't treat pilonidal cysts. However, i did participate in a study of hair laser treatment of pilonidal cyst operative sites after surgery. The results were promising. Perhaps you might discuss this with your surgeon or a dermatologist.