Recurring renal lithiasis due to Dent's disease.

Dent's disease is a rare cause of hypercalciuria and recurring urolithiasis. Patients with this disease have elevated bone resorption due to the presence of parathormone (PTH) in the urine. We describe the case of a 21-year-old male with hypercalciuria, elevated bone resorption and recurring bilateral urolithiasis that achieves radiological and clinical stability with percutaneous nephrolithotomy (PNL) and medical treatment with hydrochlorothiazide, potassium-citrate and phytate.

[Renal tubular distal acidosis: nephrocalcinosis as initial diagnosis.] / Nefrocalcinosis como manifestación de la acidosis tubular renal distal.

We present a case of a woman affected by Systemic Lupus Erythematosus (SLE) and distal renal tubular acidosis (DRTA) that during pregnancy presented an exacerbation of SLE together with a renal colic with spontaneous stone passage. Radiological exam revealed diffuse calcifications in both kidneys which suggests, in a context of DRTA, a nephrocalcinosis. With the stabilization of SLE and medical treatment directed to correct metabolic alterations we achieved radiological and clinical stability of lithiasic disease.

Se presenta el caso de una mujer afecta de Lupus Eritematoso Sistémico (LES) y acidosis tubular renal distal (ATRD) que en el embarazo presenta una exacerbacióndel LES junto con un cuadro de cólico nefrítico con expulsión espontánea de cálculos. Las pruebas radiológicas muestran calcificaciones difusas en ambos parénquimas renales lo cual sugiere, en el contexto de una ATRD, una nefrocalcinosis. Junto con la estabilización del LES y un tratamiento médico dirigido a corregir las alteraciones metabólicas se alcanza una estabilidad radiológica y clínica de la enfermedad litiásica.

Nefrocalcinosis como manifestación de la acidosis tubular renal distal / Renal tubular distal acidosis: nephrocalcinosis as initial diagnosis

Se presenta el caso de una mujer afecta de Lupus Eritematoso Sistémico (LES) y acidosis tubular renal distal (ATRD) que en el embarazo presenta una exacerbacióndel LES junto con un cuadro de cólico nefrítico con expulsión espontánea de cálculos. Las pruebas radiológicas muestran calcificaciones difusas en ambos parénquimas renales lo cual sugiere, en el contexto de una ATRD, una nefrocalcinosis. Junto con la estabilización del LES y un tratamiento médico dirigido a corregir las alteraciones metabólicas se alcanza una estabilidad radiológica y clínica de la enfermedad litiásica

We present a case of a woman affected by Systemic Lupus Erythematosus (SLE) and distal renal tubular acidosis (DRTA) that during pregnancy presented an exacerbation of SLE together with a renal colic with spontaneous stone passage. Radiological exam revealed diffuse calcifications in both kidneys which suggests, in a context of DRTA, a nephrocalcinosis. With the stabilization of SLE and medical treatment directed to correct metabolic alterations we achieved radiological and clinical stability of lithiasic disease

Prevalence of BK Virus in Renal Transplant at a Single Center: Experience With Our Ureteral Reimplantation Surgical Technique.

OBJECTIVES: BK polyomavirus is one of the main causes of chronic renal failure and ureteral stenosis in kidney transplant recipients, affecting approximately 15% of kidney transplant patients during the first year after transplant. The immunosuppressive treatment used in these recipients allows a reactivation of the virus by allowing infection, which can manifest from viruria, viremia, or nephropathy. The use of ureteral stents in renal transplant to prevent postoperative complications has been associated with an increase in BK polyomavirus nephropathy. Our objective was to describe associations between viruria and viremia and our reimplantation surgical technique and ureteral stenting. MATERIALS AND METHODS: We conducted a retrospective review of 184 transplant recipients who were seen at our center between January 2013 and December 2016. To define possible risk factors from analysis of different variables, we categorized patients into 3 groups: patients who did not present with either viremia or viruria caused by BK virus, patients who presented with viremia, and patients who presented with viruria. RESULTS: We found that 127 transplant recipients (69%) presented with neither BK viruria nor BK viremia, 11 recipients (6%) presented with BK viremia, and 46 recipients (25%) presented with BK viruria. No patient in the study had BK polyomavirus nephropathy. CONCLUSIONS: Our type of ureteral stenting has a low rate of BK viruria and BK viremia compared with other studies. In addition, with our technique, the ureteral stent removal procedure does not require an invasive endoscopic procedure, thereby avoiding the consequent economic and assistance inconvenience typically associated with an endoscopic procedure.