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Case Reports
. 1987;9(3):149-51.
doi: 10.1007/BF02932647.

The nubbin sign on computed tomography and sonography

D Blair  1 , C Rigsby, A T Rosenfield
Affiliations
Case Reports

The nubbin sign on computed tomography and sonography

D Blair et al. Urol Radiol. 1987.

Abstract

The loss of parenchyma in the lower pole of a kidney with a duplicated collecting system may mimic a mass on urography ("the nubbin sign"). Computed tomographic findings of this entity are diagnostic. The diagnosis may be difficult to make using sonography alone.

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