Four congenital tumors of the head and spine, all submitted to operation : I. Meningocele. II. Cervical spina bifida. III. Sacral spina bifida. IV. A tumor of the post-anal gut, in connection with a dermoid cyst : clinical lecture delivered at the Jefferson Medical College Hospital / by W.W. Keen.
Keen, William W. (William Williams), 1837-1932. | Date: [1891]