- speech therapist
- sperm
- sperm banking
- sperm count
- sperm retrieval
- spermatic cord
- SPF
- sphenoid sinus
- sphincter
- spiculated mass
- spinal anesthesia
- spinal block
- spinal column
- spinal cord
- spinal cord compression
- spinal tap
- spindle cell cancer
- spindle cell sarcoma
- spine
- spine cancer
- spiral CT scan
- spirituality
- spleen
- splenectomy
- splenic