Percutaneous embolization for the management of grade 5 renal injuries is safe and effective with an excellent success rate in our series. The overall complication rate is minimal. Larger studies with long-term followup are needed to assure durability and efficacy.
Since 1963, 10 cases of bladder carcinoma have been detected in 1,052 new admissions to our center. A high percentage of these patients had squamous cell carcinoma and/or squamous elements. This relatively high incidence stimulated a prospective study of 81 spinal cord injury patients either maintained on intraurethral catheter drainage for 10 years or an external appliance for 15 years. There were changes of squamous metaplasia in 19 per cent of the cases but no cancer was detected. It remains undetermined if squamous metaplasia is a pre-malignant lesion. However, the incidence of squamous metaplasia and squamous cell carcinoma in paraplegics with chronically infected bladders is not uncommon. Any spinal cord injury patient with hematuria needs a complete bladder evaluation and any long-term paraplegic with chronic infection should undergo cystoscopy and Papanicolaou smears as part of the yearly checkup.
Low-dose CT is highly sensitive and specific for the detection of urinary calculi in the pregnant population. CT confers a low risk of fetal harm and can improve patient care when used judiciously.
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