A large mass of sebaceous material is also found in these cysts.

Thomson reports a case of dermoid cyst of the bladder containing hair, which cyst he removed.
It was a pedunculated growth, and it was undoubtedly vesical and not expelled from some ovarian source through the urinary passage, as sometimes occurs.
The simpler forms of the ordinary dermoid cysts contain bone and teeth.
The complicated teratoma of this class may contain, in addition to the previously mentioned structures, cartilage and glands, mucous and serous membrane, muscle, nerves, and cerebral substance, portions of eyes, fingers with nails, mammae, etc.

Figure 64 represents a cyst containing long red hair that was removed from a blonde woman aged forty-four years who had given birth to six children.

Cullingworth reports the history of a woman in whom both ovaries were apparently involved by dermoids, who had given birth to 12 children and had three miscarriages--the last, three months before the removal of the growths.
The accompanying illustration, taken from Baldy, pictures a dermoid cyst of the complicated variety laid open and exposing the contents in situ.

Mears of Philadelphia reports a case of ovarian cyst removed from a girl of six and a half by Bradford of Kentucky in 1875.