. American practice of surgery ; a complete system of the science and art of surgery . ids of the sacro-coccygeal region, is somewhat in may arise from infoldings of the cuti-cle of the perineum during foetal develop-ment, but it is more probable that theyarise in the remains of the ectodermal por-tion of the Wolffian body or duct, possiblysometimes from the post-anal gut or fromthe neurenteric canal. They differ fromovarian dermoids which originate as aber-rant growths in ova, either fecundated ornon-fecundated, and from true teratomata,although they have been found in close re-lat
. American practice of surgery ; a complete system of the science and art of surgery . ids of the sacro-coccygeal region, is somewhat in may arise from infoldings of the cuti-cle of the perineum during foetal develop-ment, but it is more probable that theyarise in the remains of the ectodermal por-tion of the Wolffian body or duct, possiblysometimes from the post-anal gut or fromthe neurenteric canal. They differ fromovarian dermoids which originate as aber-rant growths in ova, either fecundated ornon-fecundated, and from true teratomata,although they have been found in close re-lation with tumors of the latter type fromwhich a distinct pedicle leading to thespinal column has been traced. They mayalso be associated with the type of con-genital tumors which are due to superfoetation, or foetal inclusions, but, aspreviously stated, they usually occur as simple dermoids. Nearly all of the casesthus far observed have been in females. Of thirty-two cases collected from Fig. 13. —Schlie-wener Child; ContractileTeratoma of Sacro-coccygeal Region. (Af-ter Virchow.). Fig. 14.—Sacro-Coccygeal Tumor, theSize of a Cliilds Head, in a Child two and ahalf years old, otherwise healthy. (AfterStolper.) SURGICAL DISEASES OF THE PELVIC REGION. 19 litcratuiv l)y Tillnianns, only three were in males. As they arc of very slowi!;ro\\-th, as a rule, varyinji in size when first discovered from that of a pigeonsor hens egg to that of a mans fist, being rarely as large as a childs head, theyhave been usually first detected in adult life, cither from interference with child-birth or from suppuration of their contents. If suppuration occurs and is followedby spontaneous rupture, the dermoid may discharge into the rectum, the bladder,or the vagina, or through the skin of the perineum. The position of this varietyof tumor is between the sacrum and the coccyx, behind, and the rectum in front,either in the median line or to one side of it, most often to the left. The rectumand bladde
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsurgery, bookyear1906
