| CSN | cardiac sympathetic nerve; carotid sinus nerve |
|---|---|
| CSNA | congenital sensory neuropathy with anhidrosis [syndrome] |
| CSNB | congenital stationary night blindness |
| CSNK | casein kinase |
| CSNRT, cSNRT | corrected sinus node recovery time |
| CSNS | carotid sinus nerve stimulation |
| CSNU | cystinuria |