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. Author manuscript; available in PMC: 2010 Sep 1.
Published in final edited form as: Arch Intern Med. 2009 Sep 28;169(17):1578–1586. doi: 10.1001/archinternmed.2009.263

Table 4.

Types of near-miss abnormalities1 for diagnostic imaging alerts with and without timely follow-up at 4-weeks

Lack of Timely Follow- Up
n = 92 (7.7)
Timely Follow-Up
n = 1104 (92.3)
p- value
n (%) n (%)
Suspicious for new malignancy p = 0.22
    Chest radiograph with nodular density 24 (11) 194 (89)
    Other chest imaging suspicious for neoplasm (hilar nodes, mediastinal widening, etc.) 9 (5.4) 159 (94.6)
    Abnormal imaging suspicious for gastrointestinal neoplasm necessitating an endoscopic procedure 0 (0.0) 18 (100)
    Abnormal imaging suspicious for intra-abdominal neoplasm (kidney, liver, ovarian, etc.) 11 (7.1) 143 (94.9)
    Abnormal imaging suspicious for other neoplasms, further imaging recommended 15 (8.7) 158 (91.3)
    Other 3 (14.3) 18 (85.7)
Other major new abnormalities p = 0.04
    Chest imaging showing non-neoplastic abnormalities (e.g. consolidation) 5 (4.3) 111 (95.7)
    Chest imaging showing non-specific density 8 (19.5) 33 (80.5)
    Spinal canal imaging abnormalities (e.g. severe canal stenosis) 1 (5.6) 17 (94.4)
    Other abnormal non-neoplastic imaging (e.g. aneurysm on abdominal radiograph) 12 (6) 188 (94)
    Other 4 (5.8) 65 (94.2)
1

Near misses are defined as events that could have harmed the patient but did not cause harm as a result of chance, prevention, or mitigation.

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