The following cases of dermoid ovarian cyst are of interest, not alone because of their enormous size (they weighed, respectively, 42, 39 and 32 pounds), but because of the singular fact that all three were of the left ovary.
Usually cysts of this character are small in size and of slow growth. Not infrequently they develop rapidly, attaining enormous size; rarely they become purulent, with associated fever, as instanced in one of my cases. Dr. T. Gaillard Thomas, in his "Diseases of Women," says that "dermoid cysts rarely grow larger than an adult head."
As to the genesis of these growths, the fact that they have been discovered in fetal life shows that the ovum possesses all the requisites for the development of the many structures present in dermoids, such as bone, cartilage, skin, membrane, hair, teeth, etc. Furthermore, as other ovarian cysts are almost invariably multilocular in character, it