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Korean J Radiol. 2015 Jul-Aug;16(4):866-73. doi: 10.3348/kjr.2015.16.4.866. Epub 2015 Jul 1.

Extraspinal Incidental Findings on Routine MRI of Lumbar Spine: Prevalence and Reporting Rates in 1278 Patients.

Author information

1
Department of Radiology, Trakya University Faculty of Medicine, Balkan Campus, Edirne 22000, Turkey.
2
Department of Neurology, Trakya University Faculty of Medicine, Balkan Campus, Edirne 22000, Turkey.

Abstract

OBJECTIVE:

The aim of the present study was to determine the prevalence and reporting rate of incidental findings (IF) in adult outpatients undergoing lumbar magnetic resonance imaging (MRI).

MATERIALS AND METHODS:

Re-evaluation of a total of 1278 lumbar MRI images (collected from patients with a mean age of 50.5 years, range 16-91 years) captured between August 2010-August 2011 was done by a neuroradiologist and a musculoskeletal radiologist. IFs were classified according to organ or system (liver, gallbladder, kidney, bladder, uterus, ovary, lymph node, intestine and aorta). The rate of reporting of a range of IF was examined. The outcome of each patient's treatment was evaluated based on review of hospital records and by telephone interviews.

RESULTS:

A total of 253 IFs were found in 241 patients (18.8% of 1278). Among these, clinically significant IFs (n = 34) included: 2 renal masses (0.15%), 2 aortic aneurysms (0.15%), 2 cases of hydronephrosis (0.15%), 11 adrenal masses (0.86%), 7 lymphadenopathies (0.55%), 6 cases of endometrial or cervical thickening (0.47%), 1 liver hemangioma (0.08%), 1 pelvic fluid (0.08%) and 2 ovarian dermoid cysts (0.15%). Overall, 28% (71/253) of IFs were included in the clinical reports, while clinically significant findings were reported in 41% (14/34) of cases.

CONCLUSION:

Extraspinal IFs are commonly detected during a routine lumbar MRI, and many of these findings are not clinically significant. However, IFs including clinically important findings are occasionally omitted from formal radiological reports.

KEYWORDS:

Extra-spinal findings; Incidental findings; Lumbar spine; Magnetic resonance imaging

PMID:
26175587
PMCID:
PMC4499552
DOI:
10.3348/kjr.2015.16.4.866
[Indexed for MEDLINE]
Free PMC Article

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