| X-linked agammaglobulinemia |
| X-linked dominant |
| X-linked recessive |
| X-ray |
| X-ray – abdomen |
| X-ray – bone |
| X-ray – chest |
| X-ray – gallbladder |
| X-ray – hand |
| X-ray – head |
| X-ray – joint |
| X-ray – lower spine |
| X-ray – lumbosacral spine |
| X-ray – neck |
|
| X-ray – pelvis |
| X-ray – sinuses |
| X-ray – skeleton |
| X-ray – skull |
| X-ray – spine |
| X-ray – teeth |
| Xanthelasma |
| Xanthine overdose |
| Xanthoma |
| Xeroderma pigmentosa |
| Xerophthalmia |
| Xerosis |
| Xylose tolerance test |
|
