[Primary bladder amyloidosis]. / Amiloidosis vesical primaria.

Primary amyloidosis of the bladder is a rare disease entity manifested as extracellular deposits of a fibril protein in an amyloid substance form. Clinical presentation resembles a bladder tumor, as hematuria is the most common clinical manifestation. Single organ affectation is most frequent in the bladder, however, we have found less than 100 cases. We present the case of a woman with primary amyloidosis of the urinary bladder with symtoms of hematuria. Endoscopic examination suggested a bladder tumor.

[Diffuse involvement and rapid progression of high-grade transitional carcinoma in a kidney transplant recipient]. / Afectación difusa y progresión rápida de un carcinoma transicional de alto grado en un paciente trasplantado renal.

In renal transplant patients, an increased risk of cancer has been seen, higher than in the general population, and the more frequent genitourinary neoplasms are the kidney and bladder ones. Moreover, in those patients the pattern of tumor growth is very rapid, with early tendency to local and systemic dissemination. The case here presented, a patient with kidney transplant 3 years before, with high grade, superficial transitional cell carcinoma involving the whole bladder, the pelvis and the ureter of the right native kidney, shown this fast progression. Four months after radical cystectomy plus bilateral nephroureterectomy, the disease progressed to intraperitoneal and hepatic metastases.

[Paratesticular sarcoma: apropos of a case with a 19-year evolution]. / Sarcoma paratesticular: a propósitio de un caso con 19 años de evolución.

Presentation of one case report of paratesticular sarcoma in a 51-year old patient undergoing surgical treatment and adjuvant systemic radio- and chemo-therapy with 19 years follow-up, that evolved with local relapse of the disease but no distant spread. Analysis of the difficulties of the pathoanatomical diagnosis, currently improved by immunohistochemical methods and the value of the adjuvant treatment.