Torsion of the pedicle is a serious and most common complication of ovarian tumor. The treatment in all instances is surgical. Ninety-seven cases of torsion of the pedicle were found at 1,101 consecutive operations for ovarian tumor performed at the Mount Sinai Hospital between 1924 and 1935. The grave hazards of this condition, the pathologic changes and the symptoms are of particular interest and importance. There is a dearth of literature pertaining to the subject.
The incidence of torsion in this series of ovarian tumors at Mount Sinai Hospital was 9 per cent. Eden and Lockyer found a frequency of 2 per cent; Frank,1 8.5 per cent, and Araya and Carbo, 10.22 per cent. S. Wiener reported 33 instances of torsion or a frequency of 12.26 per cent in his series of cases of ovarian tumor and Grotenfeldt, 83 instances, or a frequency of 15.2 per cent. The figures