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Whirlpool sign of adnexal torsion on CT: where can we find it?

Title
Whirlpool sign of adnexal torsion on CT: where can we find it?
Authors
Jung S.I.Park H.S.Jeon H.J.Yu M.H.Kim Y.J.Chung J.Jeong K.
Ewha Authors
정경아
SCOPUS Author ID
정경아scopus
Issue Date
2020
Journal Title
Acta Radiologica
ISSN
0284-1851JCR Link
Citation
Acta Radiologica vol. 61, no. 5, pp. 714 - 720
Keywords
adnexaComputed tomographytorsion
Publisher
SAGE Publications Inc.
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
Background: Whirlpool sign on computed tomography (CT) is pathognomic of adnexal torsion. Purpose: To evaluate the visibility and common location of the whirlpool sign in adnexal torsion on CT. Material and Methods: This retrospective study included 143 consecutive patients who underwent preoperative CT imaging and subsequent surgically confirmed as adnexal torsion. Two readers independently recorded the presence and location of whirlpool sign in adnexal torsion on CT. Patients with and without whirlpool sign were compared with regard to the size of the adnexal mass and the degree of torsion. Results: Whirlpool sign was detected in 60 (42.0%) patients on the transverse CT plane and 79 (55.2%) patients on the coronal CT plane of 143 patients. The sign was significantly better detected on the coronal CT plane than on the transverse CT plane (P = 0.03). The most common location of the sign included the posterolateral aspect of the adnexal mass on the transverse CT plane (25/60, 41.7%, P = 0.04) and the upper-lateral aspect of the adnexal mass on the coronal CT plane (45/79, 60.0%, P < 0.001). The size of the adnexal mass with whirlpool sign was significantly larger than the mass without whirlpool sign on the transverse CT plane (median 9.6 vs. 8.6 cm, P = 0.03). No significant difference in the degree of torsion was found between patients with and without whirlpool sign on CT (P = 0.56–0.62). Conclusion: Whirlpool sign of adnexal torsion is well detected at the upper-lateral aspect of adnexal mass on the coronal CT plane. © The Foundation Acta Radiologica 2019.
DOI
10.1177/0284185119877336
Appears in Collections:
의과대학 > 의학과 > Journal papers
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