[CxR] Tracheal calcification

By HCH_IM_CR |

2009年12月17日 星期四

86y/o, woman, ICU CxR

01078038_20091216_CR_1_1

01078038_20091216_CR_1_2

http://www.cmaj.ca/cgi/content/full/179/3/291

This finding is common in elderly patients and is seen almost exclusively in patients aged 40 years and older. Although visually remarkable, this finding is of no practical clinical significance. However, tracheal calcification may occur more often among patients who have taken an anticoagulation medication, such as warfarin sodium, for several years.1 Although the mechanism by which warfarin causes tracheal calcification is unknown, it may inhibit the normal formation of a vitamin K–dependent protein that prevents calcification of cartilage and connective tissue.2