Palate
Palliative
Palpation
Paracentesis
Paraneoplastic (syndrome)
Parenteral nutrition
Pathologic fracture
Pathologist
Pathology
PDQ (Physicians Data Query)
Percutaneous endoscopic gastrostomy
Performance status
Perineum
Perioperative
Peritonoscopy
Petechiae
Phlebitis
Photodynamic therapy
Photosensitivity
Placebo
Plasmapheresis
Platelet
Plateletpheresis
Pneumonectomy
Polycythemia
Polyp
Poorly differentiated
Port (infusion)
Port-a-Cath
Potassium
Precancerous
Primary tumor
Proctoscopy
Progesterone
Progesterone-receptor (PR) assay
Prognosis
Progression
Prophylactic
Prostate Specific Antigen (PSA)
Prosthesis
Protocol
Pulmonary embolism