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Inicio Actas Urológicas Españolas ¿Existe el melanoma primario de vejiga?
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Vol. 24. Issue 5.
Pages 433-436 (January 2000)
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Vol. 24. Issue 5.
Pages 433-436 (January 2000)
¿Existe el melanoma primario de vejiga?
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F. García montes1, Mª.F. Lorenzo gómez, J. Boyd
Institute of Urology and Nephrology. Londres. Reino Unido
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Resumen

El melanoma primario de vejiga es una neoplasia muy rara que debe cumplir una serie de criterios muy estrictos para confirmar su diagnóstico. Aunque se han publicado varios casos de melanomas primarios de vejiga, pocas veces se han tenido en cuenta dichos criterios diagnósticos. Se presenta el caso clínico de una mujer joven en la que se resecó un melanoma vesical maligno que se consideró primario por no poder demostrar la existencia de un melanoma de otra localización que hubiera metastatizado a vejiga. Se discuten los criterios diagnósticos de esta entidad y se comenta la dificultad, y probablemente la imposibilidad, de demostrar con absoluta certeza que, aunque existan, los melanomas que afectan al urotelio sean primarios. Nuestra paciente podría representar el mayor periodo de supervivencia sin recurrencia local o enfermedad metastásica en un caso de melanoma primario de vejiga, pero nunca podremos demostrar que existió un melanoma cutáneo o visceral oculto que metastatizó en la vejiga y después regresó espontáneamente.

Palabras clave:
Melanoma primario
Vejiga urinaria
Criterios diagnósticos
Abstract

Primary melanoma of the urinary bladder is a rare neoplasm to which very strict diagnostic criteria apply. Although reports of previous cases exist, these criteria have yet to be met. We report a case of a young lady from whom a malignant melanoma of the bladder was resected. This was presumed to be primary as detailed investigation failed to find any other site from which metastases could have originated. We discuss the diagnostic criteria of this entity and stress the difficulty in conclusively demonstrating that, despite some of these criteria being met, a lesion such as this is primary in origin. This case could be the longest surviving patient with primary melanoma of the bladder, however we will never be able to prove that spontaneous regression of an undiagnosed extravesical primary malignant melanoma did not occur.

Key words:
Primary melanoma
Urinary bladder
Diagnostic criteria

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