Melanoma maligno metastásico en vejiga urinaria / Metastatic malignant melanoma of the urinary bladder

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[Liposarcoma in childhood. Report of an exceptional case. Review of the literature]. / Liposarcoma en la infancia. Aportación de un caso excepcional. Revisión de la literatura.

This paper describes a case of liposarcoma of exceptional paratesticular location (first in the literature described in infancy). The case corresponds to a 5-year-old boy. The influence of the histology, location of the tumour and possibility of complete surgical exeresis is fundamental with regard to prognosis and evolution. Pediatric experience is extremely limited and we may superimpose the treatment in children of that carried out in adults (more case histories), in whom multimodal therapy (surgery, radiotherapy, chemotherapy) concludes with encouraging results. The updating of previously published cases reveals the predominance of myxoid histology, a lower index of relapses in infancy and a high peak of incidence in early infancy.

[Primary embryonic rhabdomyosarcoma of the prostate. An unusual location]. / Rabdomiosarcoma embrionario primitivo de próstata. Una localización excepcional.

We report on an 18-year-old patient with embryonal rhabdomyosarcoma of the prostate who presented with urinary retention. An ultrasound-guided percutaneous punction corroborated the presumptive diagnosis. The patient was submitted to the appropriate combined treatment modality of chemotherapy, radiotherapy and surgery; however, the virulence of tumor spread led to a fatal outcome less than one year following treatment.