Ovarian tumors in pregnancy are, as has been said, rarer than myomata. Such tumors are mostly cysts and dermoids. In 862 cases collected by MacKerron, 68 per cent. were cysts, 23 per cent. dermoids, 5 per cent. malignant tumors, and a few were myomata. Cysts and dermoids do not, like the myomata, grow bigger during pregnancy, but they may hinder delivery or grow gangrenous and septic. When treated early the mortality in pregnancy is from 2.1 to 5.9 per cent for the women, but delay gives a maternal mortality of from 31 to 39 per cent. The fetal mortality in Heiberg's statistics of 271 cases was 66 per cent. Most obstetricians advise the removal of an ovarian tumor in pregnancy as soon as diagnosed, provided it is of a size to cause difficulty in parturition, but such a removal causes abortion in over 20 per cent. of the cases. The expectant treatment causes abortion in about 17 per cent. If the child is viable, Fehling, Martin, Norris, and De Lee are in favor of the expectant treatment. Late operators leave weak scars at labor. When there are symptoms of torsion of the pedicle of the tumor, infection, incarceration in the pelvis, involvement of the uterine broad ligament, or overdistention of the belly, the tumor must be removed immediately. Whether vaginal puncture or laparotomy is the better method is to be decided particularly. Dermoid cysts are likely to bring on sepsis if they are broken in enucleation, and the diagnosis and operation must be carefully made. When it is necessary to save the life of the woman to remove an ovarian tumor, the risk of abortion may be taken permissively. Cancers of the cervix uteri are always malignant and cause death if they are not removed before they have gone on to metastasis. As this tumor commonly appears after the child-bearing age, it is rare in pregnancy; the ordinary ratio is one in 2000 deliveries, but De Lee saw only one in Chicago in 16,000 consecutive labors. Abortion occurs in from 30 to 40 per cent. of the cases. Spontaneous rupture of the uterus may happen, and placenta praevia is frequent relatively. Pregnancy hastens the growth and spread of cancer very much. Eight per cent. of the women die undelivered, and 43 per cent. die during labor or immediately afterward. Of all uterine cancers, 80 per cent. are cervical.