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Vol. 24. Issue 9.
Pages 743-748 (January 2000)
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Vol. 24. Issue 9.
Pages 743-748 (January 2000)
Neoplasia papilar urotelial de bajo potencial maligno. Estudio retrospectivo
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J. Álvarez Kindelan1, A. López Beltrán, M.J. Requena Tapia
Servicio de Urología y Servicio de Anatomía Patológica. HRU Reina Sofía. Córdoba
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Resumen

El conocimiento de la evolución y supervivencia a largo plazo de las neoplasias papilares uroteliales de bajo potencial maligno de vejiga es aún muy limitado dada la reciente aparición de esta terminología

Material Y Métodos

Se revisan y reclasifican todos los carcinomas vesicales superficiales tratados en el HRU Reina Sofía de Córdoba entre 1990 y 1995. Encontramos 50 pacientes que reúnen los criterios de neoplasia papilar urotelial de bajo potencial maligno según la nueva clasificación de la OMS/ISUP de 1998 para las lesiones vesicales. Ningún paciente tenía historia previa o coexistente de displasia urotelial, carcinoma in situ o carcinoma urotelial invasivo

Resultados

La edad media al diagnóstico fue de 62,08 años (rango 32-85). De los 50 pacientes, 44 fueron varones y 6 mujeres. En todos los casos hubo ausencia de neoplasia en el tracto urinario superior. En 39 pacientes (78%) hubo 2 o menos implantes tumorales y en 11 casos (22%) 3 o más implantes del tumor primario. El tamaño tumoral medio fue de 2,26 cm (rango 1-5). Recidivaron sin progresión 17 (34%) de los 50 pacientes y progresaron 2 pacientes (4%). La supervivencia media fue de 78 meses (rango 33-117), falleciendo 2 pacientes por cáncer vesical

Conclusiones

Los pacientes con neoplasia papilar urotelial de bajo potencial maligno tienen un riesgo incrementado de recurrencia local, progresión y muerte por cáncer vesical por lo que han de ser sometidos a un estrecho seguimiento

Palabras Clave:
Cáncer vesical
bajo potencial maligno
Abstract

The knowledge about the evolution and long-term survival of patients with papillary utothelial neoplasm of low malignant potential of the bladder is still limited due to the recent implantation of this term.

Material And Methods

Patients with superficial bladder cancer treated at HRU Reina Sofía between 1990 and 1995 were reviewed. We found 50 patients with the diagnostic criteria of “papillary urothelial neoplasm of low malignant potential” according to the classification of the 1998 World Health Organization/International Society of Urologic Pathology (WHO/ISUP). There were no patients with a prior history or coexistent urothelial dysplasia, carcinoma in situ, or invasive urothelial carcinoma

Results

Patient mean age at diagnosis was 62.08 years old (range: 32-85). Male to female ratio was 7:1 (44 male and 6 female). No evidence of neoplasia in the upper urinary tract was found in any patient. Thirty nine patients (78%) had one or two tumor implants, and 11 patients (22%) had three or more. Mean tumor size was 2.26 cm (range: 1-5). There were recurrence without progression in 17 cases (34%) and recurrence with progression in two patients (4%). Mean survival was 78 months (range: 38-117) and two patients died of bladder cancer

Conclusions

Patients with papillary urothelial neoplasm of low malignant potential have increased risk of local recurrence, progression, and dying of bladder cancer. Long-term follow-up is recommended in the postoperative management of these patients

Key Words:
Bladder cancer
low malignant potential

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