From the Department of Diagnostic Imaging, National University Hospital, National University Health System, Singapore.
All correspondence should be addressed to: Ying Liang Low, MBBS, FRCR, National University Hospital, 5 Lower Kent Ridge Rd, Singapore 119074.
This article has not been presented in any form previously.
Ying Liang Low is in training.
Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article.