Plummer–Vinson syndrome – pluripotent – pluripotent stem cell – pM-81 monoclonal antibody – PNET – pneumonectomy – PNU 166148 – PNU-93914 – polifeprosan 20 carmustine implant – poly-ICLC – polyglutamate camptothecin – polyglutamate paclitaxel – polymerase chain reaction – polymorphism – polyneuritis – polyp – polypectomy – polyphenol – Polyphenon E – polyposis – pons – pontine – porfimer sodium – porfiromycin – port-a-cath – positive axillary lymph node – positive test result – positron emission tomography scan – postremission therapy – PR+ – PR- – precancerous – precancerous dermatitis – precancerous dermatosis – precancerous polyps – predictive factor – prednisolone – prednisone – preleukemia – premalignant – pretracheal space – prevascular space – preventive mastectomy – primary central nervous system lymphoma – primary endpoint – primary myelofibrosis – primary peritoneal cancer – primary tumor – primitive neuroectodermal tumor – prinomastat – pro-oxidant – probenecid – procarbazine – prochlorperazine – proctoscopy – proctosigmoidoscopy – progesterone receptor negative – progesterone receptor positive – progesterone receptor test – progression-free survival (PFS) – progressive disease – proliferative index – prolymphocytic leukemia – promegapoietin – promyelocytic leukemia – prophylactic cranial irradiation – prophylactic mastectomy – prophylactic oophorectomy – prophylactic surgery – prophylaxis – prospective cohort study – Prost 30 monoclonal antibody – prostate-specific antigen – prostate-specific antigen test – prostatectomy – prostatic acid phosphatase – prostatic intraepithelial neoplasia – prostatitis – protease inhibitor – protein kinase C – proteoglycan – proteomic profile – proteomics – proton beam radiation therapy – proton magnetic resonance spectroscopic imaging – PS-341 – PSA – psammoma body – PSC 833 – pseudomyxoma peritonei – psoralen – PTC – PTCD – PTK787/ZK 222584 – ptosis – pulmonary sulcus tumor – PV701 – pyrazine diazohydroxide – pyrazoloacridine – pyroxamide Q Q10 – QS21 – quadrantectomy R R-flurbiprofen – r-tPA – R101933 – R115777 – radiation fibrosis – radiation oncologist – radiation physicist – radiation surgery – radiation therapist – radiation therapy – radical cystectomy – radical lymph node dissection – radical mastectomy – radical perineal prostatectomy – radical prostatectomy – radical retropubic prostatectomy – radioactive drug – radioactive iodine – radioactive palladium – radioactive seed – radiofrequency ablation – radiographer – radioimmunoguided surgery – radioimmunotherapy – radioisotope – radiolabeled – radiologic exam – radionuclide scanning – radiopharmaceutical – radiosensitization – radiosensitizer – radiosurgery – radiotherapy – raloxifene – raltitrexed – randomized clinical trial – ranpirnase – rapamycin – rapid hormone cycling