Pilonidal sinus disease is an acquired disorder of the natal cleft and its incidence is
reported as 6 in 100,000. Although there are many opinions regarding the treatment of
pilonidal sinus disease in the literature, surgery is the main treatment method. Regardless
of the treatment protocol, this disease has a certain risk of recurrence. Therefore, the
ideal treatment procedure for the pilonidal disease should be simple to perform, should allow
patients to return earlier to work, should be associated with minimal pain, and should
minimize financial cost.
Phenol application into the pilonidal sinus is an additional nonoperative adjunct to
treatment. This method is typically used after all hair and debris have been removed or
curetted from the sinus, and it helps to eliminate granulation tissue and further debris
formation. The injection is followed by hair control and strict hygiene. The use of phenol
causes an intense inflammatory reaction which destroys the epithelial lining, and care should
be taken to protect the surrounding skin. Pain is intense and may require inpatient admission
for pain control but success rates have been reported to range from 60% to 95%. However, it
is difficult to know which patients can expect enough benefit from phenol application.
The aim of the study is to evaluate the factors affecting the outcomes of patients with the
pilonidal disease treated with crystallized phenol and to evaluate long-term recurrence rates
of pilonidal disease treated with crystallized phenol.