Although it is the primary purpose of this paper to report a case of congenital cystic tumor occurring in the sacrococcygeal region, a few words regarding the general subject of tumors situated in this locality will help to make clear the pathogenesis of this case. Therefore, after considering the gerieral classification of sacrococcygeal tumors and reviewing the cystic type in some detail, the embryology of the caudal end of the human embryo will be considered before taking up my case.
The congenital dorsal-sacral hernia containing bowel and bladder must be considered in connection with tumors of this region. Lotzbeck1 gathered from the literature 6 such cases, which he divided into simple and combined cases. Under the heading of simple he cites three cases : two were hernias of a part of the bowel with a normal sacrum, reported by Bezold2 and Schreger,3 respectively, and one case of
DAVIS GG. CONGENITAL SACROCOCCYGEAL CYST OF EPENDYMAL ORIGIN. JAMA. 1910;LIV(16):1288-1296. doi:10.1001/jama.1910.92550420001001e