Partial Response – The cancer has shrunk by a percentage but evidence of disease remains.

Pelvic inflammatory disease (PID) – An infection that affects the female reproductive system (i.e., vagina, uterus, fallopian tubes, or ovaries)

Peritoneum – The lining of the abdomen that protects the abdominal organs

Peutz-Jeghers syndrome – A condition characterized by noncancerous growths in the stomach and intestines

Platinum – A metal that is an important component of some anticancer drugs, such as cisplatin and carboplatin.

Positron emission tomography-computed tomography (PET-CT) scan – A diagnostic imaging procedure revealing the structure and function of cells

Prevalence – The number of people with a condition in a given population at a particular time

Progression-free survival (PFS) – The length of time during and after treatment that you live with cancer but it does not get worse

Protocol – Description that includes the objectives, design, and methods of a clinical study. Scientific background and statistical data may also be included