1. Carcinoma of the urachus;Giglioli;Arch. Vecchi An at. Pat.,1961
2. Carcinoma of the urachus;Lane;Irish J. Med. Sci.,1961
3. Cancer of the urachus;Ercole;An. Cir. (Rosario),1962
4. Tumors of the urachus;Rankin;Surg. Gynec. & Obst.,1926
5. Diseases of the Umbilicus;Cullen,1916