| Abbreviation | Definition |
|---|---|
| AE | Adverse Event |
| AFBMTC | Armed Forces Bone Marrow Transplant Centre |
| AFP | AlphaFetoProtein |
| AFRE | Asbestos Fiber Release Episode |
| AGC | Advanced Gastric Cancer |
| AGC | Atypical Glandular Cells |
| AGEScriteria | age, grade, extent, size (for tumors) |
| AIDS | Acquired Immune Deficiency Sydrome |
| AIOM | Italian Association for Medical Oncology |
| AIRO | Associazione Italiana di Radioterapia Oncologica |
| AJCC | American Joint Committee on Cancer |
| AL | Acute Leukemia |
| ALAT | ALanine AminoTransferase |
| ALCL | Anaplastic Large Cell Lymphoma |
| ALI | Annual Limit on Intake |
| ALL | Acute Lymphoblastic Leukemia |
| ALPS | Autoimmune LymphoProliferative Syndrome |
| ALT | Alanine AminoTransferase |
| AMKL | Acute Megakaryocytic Leukemia |
| AML | Acute Myeloid leukaemia |