RESUMO
The name of sacro-coccygeal tumors is used generally for various tumors embryologically different in their origin. Rare, but not exceptional in number, these sacro-coccygeal tumors may have various locations and different sizes which make diagnosis more or less difficult. Benign in the first months of life, risks of malignancy will increase with age. Systematical intrarectal exploration will help not to overlook pelvic forms and will recognize pelvic extension in other types. Once found out, the extension of these sacro-coccygeal tumors should be estimated by complementary examination choosen according to the presumed type of tumor and it is to be regretted that myelography should be so often neglected. Treatment should always be surgical with one piece aphotesis if possible; good preparation and exact reanimation of the child are necessary because sometimes surgical treatment may be a very severe aggression for small babies. Constant surgical and biological overall should be maintained for many years in order to discover as early as possible any local relapse or metastasis.