| Abbreviation | Definition |
|---|---|
| AT/RT | Atypical Teratoid / Rhabdoid Tumor |
| ATC | Anaplastic thyroid cancer |
| ATL | Adult T-cell Leukemia |
| ATLL | Adult T-Cell Leukemia-Lymphoma |
| ATLS | Acute Tumor Lysis Syndrome |
| ATOMIC | Academic Thoracic Oncology Medical Investigators Consortium |
| AUC | Area Under the Curve |
| AWS | Axillary Web Syndrome |
| BACR | British Association for Cancer Research |
| BAER | Brainstem Auditory Evoked Response |
| B-ALL | B-cell Acute Lymphoblastic Leukaemia |
| BASO | British Association of Surgical Oncologists |
| BASO | British Association of Surgical Oncology |
| BBDR | Benign Breast Disease Registry |
| BC | Breast Cancer |
| BCA | Breast Cancer Action |
| BCA | Breast Carcinoma |
| BCC | Basal Cell Carcinoma |
| BCC | Breast Cancer Center |
| BCCP | Breast and Cervical Cancer Program |