Papillary serous adenocarcinomas. The vast majority (more than 95 per cent) of fallopian tube cancers are papillary serous adenocarcinomas. These cancers grow from cells that line the fallopian tubes that have become abnormal. When the cells begin to divide abnormally and gain the ability to invade other organs or spread to other parts of the body, tumours may form.
Leiomyosarcomas and transitional cell carcinomas. Very occasionally, tumours can form from smooth muscle in the fallopian tubes, in which case they are called sarcomas (leiomyosarcomas), or from other cells that line the fallopian tubes, in which case they are called transitional cell carcinomas.