| SCUT | schizophrenic chronic undifferentiated type |
|---|---|
| SDAT | senile dementia of Alzheimer type |
| SEMDIT | spondyloepimetaphyseal dysplasia, Irapa type |
| SER-IV | supination external rotation, type 4 fracture |
| SFB | Sanfilippo syndrome type B; saphenofemoral bypass; surgical foreign body |