A fibroid (or myoma) that grows from the outside surface of the uterus, into the cavity of the abdomen, or peritoneal cavity. The least likely of any sort of fibroid to affect reproduction, but can cause symptoms of pressure or pain should it twist or degenerate suddenly.

A benign "tumor" of the muscular wall of the uterus (the myometrium). More common with increasing age, but can occur in women in their twenties. Can be single or multiple, and can be located on the outside of the uterus (a subserous fibroid), within the wall of the uterus (an intramural fibroid), or protruding into the cavity of the uterus (a submucous fibroid. The closer it is (or they are) to the endometrial cavity, the more likely it is that a fibroid will disturb reproduction (either as miscarriages or sometimes as infertility) and disturb menstrual bleeding. Surgery for removal of a fibroid, or myoma, is called a myomectomy.

An operation to remove a myoma, or fibroid. A myomectomy for a submucous fibroid is often possible at hysteroscopy; a myomectomy for an intramural fibroid (located within the wall of the uterus), usually requires an open operation, or laparotomy; a myomectomy for a subserous fibroid can be possible at laparoscopy.