This article contains a list of commonly used medical abbreviations and acronyms that start with the letter X and may be encountered in medicine and radiology (please keep the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z - misc
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X
coagulation factor X
sex-determining chromosome
ten (Roman numeral)
XDR-TB: extensively drug-resistant tuberculosis
Xe: xenon
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XI
coagulation factor XI
eleven (Roman numeral)
XIAP: X-linked inhibitor of apoptosis protein
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XII
coagulation factor XII
twelve (Roman numeral)
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XIII
coagulation factor XIII
thirteen (Roman numeral)
XOA: x-ray on arrival
XR: x-ray
XROA: x-ray on arrival
XRT: radiation therapy
XV: extended volume (GE MRI)
XX: female karyotype
XXX: XXX syndrome (trisomy X)
XXXX: X chromosome tetrasomy
XXXXX: X chromosome pentasomy
XY: male karyotype
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