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The urachus is an embryonic remnant that connects the primitive bladder to the allantois. Multiple urachal anomalies have been described, including the urachal sinus, urachal cyst, patent urachus, and urachal diverticulum. We describe an unusual case in which a patient with urinary tract infection and dysuria was ultimately found to have urinary gallstones from a urachal connection with the gallbladder.

We report the case of a 74-year-old man with a colovesical fistula caused by a gallstone that was lost during a laparoscopic cholecystectomy 7 months earlier. The patient was cured after undergoing colonoscopic removal of the stone. To our knowledge this is the first case report of such a complication in the English literature. The report reviews the outcome and complications of retained intraperitoneal gallstones.

We describe a 22-year-old man with Crohn's ileocolitis accompanied by intestinal stenosis and ileovesical fistula in whom laparoscopically-assisted surgery was successfully performed after thorough nutritional therapy. Laparoscopic procedures are characterized by minimal access and minimal invasion, features which can contribute to the early recovery of patients who undergo surgery. It is suggested that laparoscopic (or laparoscopically-assisted) surgery after strict nutritional therapy can be effective in the treatment of patients with Crohn's disease who have intestinal complications.

A previously unreported case of vesicourethral fistula in a female is presented. Its possible etiology and recommendations are discussed.

A 6-year-old girl with meningomyelocele and a neurogenic bladder was managed with clean intermittent catheterization. After 3 months she developed a vesicocolonic fistula, demonstrated on cystography. This is the first such complication reported since this type of management was popularized.

A case of mucoid adenocarcinoma of the urachus demonstrated by ultrasonography, cystography, and computerized tomography is presented. The inhomogeneous, echogenic mass was confluent with the anterior--superior aspect of the bladder but was also associated with a fistula between the bladder and small intestine, a finding not previously reported.