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The "stipple sign" - urographic harbinger of transitional cell neoplasms
Urologic Radiology
|January 1, 1979
Abstract:
The trapping of contrast material within the interstices of a papillary growth produces a stippled appearance when viewed end on. Since the majority of transitional cell neoplasms have a papillary configuration, the stipple sign is highly suggestive of the presence of this lesion.