Fig. 7

Balloon dilatation was attempted to widen the fistula. The size of the fistula was approximately 6 cm in length and 0.2 cm in diameter when noted. Therefore, to avoid further invasive surgery, we first opted to repeat dilation every 1 or 2 weeks. Although we successfully increased the diameter of the fistula to 0.8 cm, the patient remained unable to ingest food