A member asked:

Post 10 months pilonidal cyst surgery with secondary intention what can this skin lesion be?

A doctor has provided 1 answer

Tailbone abscess: Pilonidal cysts are caused by groups of hairs and debris trapped in the pores of the skin in the upper cleft of the buttock, near the tailbone, and cause an abscess. Sometimes the abscess is just opened and allowed to heal, but with recurrent episodes, the entire cyst is excised. Usually the wound is not stitched closed but is allowed to heal from the inside out, or with "secondary intention."

Answered 5/6/2019

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What could cause complications with pilonidal cyst three years after surgery?

2 doctors weighed in across 2 answers