The criticism has frequently been made that a collected series of fibromyomata uteri do not furnish accurate information on the life history of these tumors. That position is well taken, as the conclusions drawn from such studies have greatly underestimated the danger of these tumors. A consecutive series studied carefully, histologically, will demonstrate that the malignancies in the uterus and the degenerations in the tumor are decidedly more frequent than is generally believed.
The subject-matter of this paper is based on my first 100 consecutive cases of fibromyomata uteri subjected to operation. While the number is not sufficient from which to draw definite conclusions, the material shows some interesting facts which will be given for what they are worth. With the exception of one specimen removed in Canada and one which was lost before reaching the laboratory, all have been examined microscopically. Every specimen in which the pathologist reported a