[Nephrogenic adenoma of the bladder: metaplasia or embryologic alteration?].
OBJECTIVE
To present a new case of nephrogenic adenoma of the bladder and to review the current concepts on the etiopathogenesis of this lesion.


METHODS
Seventy years old female with repetitive haematuria who was diagnosed as having a nephrogenic adenoma of the bladder which was extirpated by cold biopsy forceps. No tumoral relapse was detected after 16 months of follow up.


CONCLUSIONS
In the light of the present knowledges, the origin of nephrogenic adenoma is a phenomenon of urothelial metaplasia due to a chronic irritative stimulus wich would lead a cellular proliferation with potentialities to originate mesonephric tissues and which starting point could be on not completely involutioned mesonephric cellular rests and/or on de-differentiated mature urothelial cells.
Sousa Escandón
M A
MA
Servicio de Urología, Hospital Comarcal de Monforte, Lugo.
Pérez Valcárcel
J
J
González Fernández
M
M
González Rodríguez
A
A
Lapeña Villarroya
J A
JA
Uribarri González
C
C
D000236:Adenoma / Q000473:pathology*; D000368:Aged; D005260:Female; D006801:Humans; D008679:Metaplasia; D001743:Urinary Bladder / Q000196:embryology* / Q000473:pathology*; D001749:Urinary Bladder Neoplasms / Q000473:pathology*