The occurrence of a pilonidal sinus extending to and communicating with the arachnoid space seems to be of sufficiently rare occurrence to justify a report of such a case.
REPORT OF CASE
History.—DeWitt de'L., aged 3½ months, was referred to the Mountainside Hospital on June 7, 1927, by his private physician, with a diagnosis of pneumonia.The patient was born at term in normal delivery. Constipation had been present in a varying degree since birth, but otherwise he apparently was normal up to two weeks previous to admission to the hospital. At that time, he became fretful. The fretfulness became more pronounced and one week before admission was associated with vomiting and loss of appetite. Two days before admission it was noticed that any attempt to lift the child caused it to scream, in apparent pain, throw its head back and become somewhat rigid. The temperature was said to