- Kaposi Sarcoma
- Kawasaki Disease
- Keloids see Scars
- Kernicterus see Jaundice
- Kidney Biopsy see Kidney Tests
- Kidney Cancer
- Kidney Cysts
- Kidney Diseases
- Kidney Failure
- Kidney Function Tests see Kidney Tests
- Kidney Infections see Urinary Tract Infections
- Kidney Stones
- Kidney Tests
- Kidney Transplantation
- Klinefelter Syndrome
- Knee Injuries and Disorders
- Knee Replacement
- Kyphosis see Spine Injuries and Disorders