Inverted (endophytic) noninvasive lesions and neoplasms of the urothelium: the Cinderella group has yet to be fully exploited.

摘要

Noninvasive urothelial lesions and neoplasms can be flat (planophytic), papillary (exophytic), and inverted (endo-phytic), depending on their growth-pattern relationship with the surface of the surrounding urothelial mucosa [1]. Extensive clinicopathologic studies have been published related to the first two growth patterns. The clinical significance of the third has been dealt with in only a very limited extent. This is related to the fact that classification and terminology for the inverted lesions and neoplasms, consistent with those of the flat and papillary counterparts, are still lacking in the literature.