4. Fistula
Def: A fistula is an abnormal
communication between two epithelium
lined surfaces. This communication or tract
may be lined by granulation tissue
8. Investigation:
CB- Hb, TLC, DLC, ESR.
Discharge for C/S , AFB, cytology,
Gram staining.
X-RAY of the part to rule out OM,
foreign body.
MRI (fistulogram)
BIOPSY from edge of sinus
Sinusogram/Fistulogram