Four Congenital Tumors of the Head and Spine, All Submitted to Operation

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Excerpt from Four Congenital Tumors of the Head and Spine, All Submitted to Operation: Meningocele, Cervical Spina Bifida, Sacral Spina Bifida, A Tumor of the Post-Anal Gut, in Connection With a Dermoid Cyst, Clinical Lecture Delivered at the Jefferson Medical College HospitalBY W. W. Keen, M.D., Professor of the Principles of Surgery in the Jefferson Medical College.Gentlemen, - I shall have the pleasure Of considering with you today four tumors which illustrate remarkably well some more or less allied forms Of imperfect development, and some recent discoveries in embryology. The first three are associated with imperfect develop ment of the posterior or neural arches of the vertebrae, and the fourth is a double anomaly, illustrating a very rare form of tumor arising from an Obsolete canal, with another from developmental inversion of the skin.The first and third I shall operate on before you the second was a casein my private practice operated on in this hospital, and the fourth was Operated on at St. Agnes's Hospital.The first is a case Of meningocele, in which the posterior arch of the occipital vertebra (for you know this bone is a vertebra) is imper feet and has an aperture through which the meninges of the brain and possibly some of the brain-tissue itself is protruding. The second and third cases are spinae bifidae, in which again the posterior or neural arches have failed to unite, and hence there has been a protrusion of the membranes Of the spinal cord together with some nerve-filaments in one case. These three are all closely allied. The fourth is a tumor situated in front Of and not behind the coccyx, and while in being congenital and in its position at the end Of the vertebral column it is allied to the other tumors, yet its origin is wholly different. Adjacent to it is developed a dermoid cyst.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.