At operation the sigmoid colon with the fistulous tract were excised.

Probing will now disclose a fistulous tract leading to the bottom of the diseased tissues.

This was followed one year later by excision of the fistulous tract and establishment of cervicovaginal communication.

A fistulous tract leading from the infraumbilical midline scar to the uterus was demonstrated on contrast study.

Pathological examination showed a 5x5 cm aneurysm of the splenic artery that was connected to the splenic vein through a fistulous tract.

Fistulous tracts are lined with a false, or adventitious, membrane and show no disposition to heal.

A probe shows these fistulous tracts to be more or less sinuous, but always leading to one point-thegangrenous cartilage.

Also at the end of follow up period upon performing the confirmatory MRI, 2 patients showed hidden fistulous tracts ending into a high abscess cavity.