| PS | progressive stroke |
| PS | pathological staging |
| PS | Pulmonalstenose |
| PSA | Prostataspezifisches Antigen |
| PSC | primär sklerosierende Cholangitis |
| PSL | Pseudolymphome |
| PSP | Progressive supranukleäre Paralyse |
| PSR | Patellarsehnenreflex |
| PSS | Progressive Systemische Sklerose |
| PSV | proximale selektive Vagotomie |
| PSVT | Paroxysmale superventrikuläre Tachykardie |
| PTA | Plasmin-Thromboplastin-Antezedent |
| PTA | perkutane transluminale Angioplastie |
| PTC | perkutane transhepatische Cholangiographie |
| PTC | papillary thyroid carcinoma |
| PTCA | perkutane transluminale koronare Angioplastie |
| PTCD | perkutane transhepatische Cholangiodrainage (ext. Ableitung der Galle) |
| PTD | Prätransplantationsdiagnostik |
| PTH | Parathormon |
| PTLD | post-transplant lymphoproliferative disorders |
| PTS | patients |
| PTS | permanent threshold shift |
| PTS | Postthrombotisches Syndrom |
| PTT | Thromboplastinzeit (partial thromboplastin time) |
| PTZ | partielle Thromboplastinzeit |
| PTZL | pleomorphe T-Zell-Lymphome |
| PUFI | Punktionsfistel |
| PUVA | Psoralen-UVA-Licht(therapie) |
| PV | Polycythaemie vera |
| pvk | Periphere Verschlußkrankheit. |