CWU in medical terms stands for canal wall up.
According to the provided reference, CWU refers to canal wall up in a medical context. The reference also mentions DL (direct laryngoscopy) and EAC (external auditory canal), which are related to different areas of the head and neck. The reference provides the following abbreviations:
- CWU: canal wall up
- DL: direct laryngoscopy
- EAC: external auditory canal
