 I initially probed the wound with a hemostat and this had at least 12 cm long tract and I proceeded to excise the badly scarred skin that was on top of it and then continued the dissection to the fascia and I realized that the sinus tract was going through the fascia into the abdomen. 
I initially probed the wound with a hemostat and this had at least 12 cm long tract and I proceeded to excise the badly scarred skin that was on top of it and then continued the dissection to the fascia and I realized that the sinus tract was going through the fascia into the abdomen .