- pregnancy
- Pregnyl
- Prelay
- preleukemia
- Prelone
- premalignant
- Premarin
- premature menopause
- premature ovarian failure
- premenopausal
- premycotic phase
- prescription
- pretracheal space
- prevalence
- prevascular space
- prevention
- preventive
- preventive mastectomy
- Prialt
- Prilosec
- primary care
- primary care doctor
- primary central nervous system lymphoma
- primary CNS lymphoma
- primary effusion lymphoma
- primary endpoint
- primary myelofibrosis
- primary ovarian insufficiency
- primary therapy
- primary treatment
- primary tumor
- primitive neuroectodermal tumor
- Prinivil
- prinomastat
- pro-oxidant
- probenecid
- probiotic
- procarbazine
- procarbazine hydrochloride
- prochlorperazine
- Prochymal
- Procrit
- proctitis
- Proctocort
- proctoscopy
- proctosigmoidoscopy
- Profasi
- progenipoietin
- progeny
- progesterone