Retrograde migration of a vesicoureteric junction calculus: A potential pitfall of the noncontrast limited pelvic computerized tomography.

Autor: Miah S; Department of Urology, Buckinghamshire NHS Trust, Wycombe Hospital, Wycombe, UK., Connor MJ; Department of Surgery and Cancer, Imperial College, Charing Cross Hospital, London, UK., Wiseman O; Department of Urology, Cambridge University Hospitals, Cambridge, UK., Shah N; Department of Urology, Cambridge University Hospitals, Cambridge, UK.
Jazyk: angličtina
Zdroj: Urology annals [Urol Ann] 2021 Jan-Mar; Vol. 13 (1), pp. 80-82. Date of Electronic Publication: 2021 Jan 19.
DOI: 10.4103/UA.UA_25_20
Abstrakt: Retrograde ureteric calculus migration is a rare phenomenon. Herein, we report two such cases where each patient presented with a calculus, measured at 5 mm and 6 mm, respectively, at the vesicoureteric junction (VUJ) on noncontrast computerized tomography kidneys, ureters, and bladder (CTKUB). Following acute presentation with renal colic, each patient opted for conservative management of their ureteric stone and became asymptomatic when undergoing their follow-up imaging. The first patient underwent a follow-up noncontrast limited pelvic computerized tomography (CT) where it had appeared that the radiolucent VUJ calculus had passed. This stone was then discovered incidentally 3 months later in the upper ureter when the patient had undergone a CT colonography. The other patient underwent a follow-up X-ray KUB where the stone was shown to have migrated to the lower renal pole calyx which was confirmed with noncontrast CTKUB imaging. In all reported cases of retrograde VUJ calculus migration, the use of a noncontrast limited pelvic CT scan either missed or would have missed this phenomenon. This potential pitfall of the noncontrast limited pelvic CT scan should be appreciated and the use of full upper renal tract imaging should be considered for the follow-up of radiolucent VUJ calculus cases whereby there is no clear history of calculus passage.
Competing Interests: There are no conflicts of interest.
(Copyright: © 2021 Urology Annals.)
Databáze: MEDLINE
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