[Pure squamous carcinoma of the ureter. Review of a case]. / Carcinoma escamoso puro de uréter. Revisión de un caso.

We report a case of squamous cell carcinoma of the ureter with periureteral infiltration. Three years following radical surgery, no evidence of tumor progression has been observed. Only 1% to 1.6% of urothelial tumors of the upper urinary tract are purely squamous cell tumors. This tumor type carries a poor prognosis. Currently, the best results can be achieved by early diagnosis and radical surgery.

[Vascular complications in 237 recipients of renal transplant from cadaver]. / Complicaciones vasculares en 237 receptores de trasplante renal de cadáver.

Between July 1976 and June 1990, 244 transplantations were performed. Of the 237 patients monitored, 13 (5.4%) had vascular complications: 10 (77%) renal artery stenosis, 1 (7.7%) primitive iliac artery stenosis, 1(7.7%) renal artery thrombosis, 1 (7.7%) renal vein thrombosis. Six patients underwent surgery (Angioplasty was performed in three patients, re-anastomosis to the common iliac artery in one, by-pass of saphenous vein in another one, while in the last one it was tried a release of the vascular pediculus). Management with drugs was possible in one case. At present, 11 of the 13 patients are still alive and three of the grafts remain functional after a mean follow-up time of 83 months. According to a univariate study, the influential factors in the development of vascular complications are, the identity of Locus A, the type of extraction in Locus B, the length of cold ischaemia, the type of vascular anastomosis and the number of previous rejections. The factors with maximal influence in the development of complications are the type of vascular suture (with or without patch) and the number of previous rejections (according to a study of log regression models). The study demonstrates the significant influence vascular complications have on the graft's durability (p = 0.005).

[Kidney pelvis tumor in ectopic kidney. Report of a case]. / Tumor de pelvis renal en riñón ectópico. A propósito de un caso.

A case of urothelial carcinoma in pelvic ectopic kidney is described. The low incidence of both pathologies and their rare association justifies the description.

[Hyperammonemia and transient blindness after transurethral resection of the prostate. Review of a case]. / Hiperamonemia y ceguera transitoria post resección transuretral de próstata. Revisión de un caso.

We report a case of hyperammonemia and transient blindness following transurethral prostatic resectin. Glicine and ammonia metabolism are reviewed. Water intoxication may not account for these symptoms.