Infected and obstructed kidney secondary to sloughed necrotic renal papilla

Description  

A 66-year-old Afro-Caribbean woman presented with a 1-day history of sharp left flank pain. This was associated with nausea and diarrhoea, without fever or urinary symptoms. Her medical history includes type 2 diabetes mellitus on insulin therapy but with suboptimal control (haemoglobin A1c 80 mmol/mol or 0.23 g/dL glucose levels) and related complications including chronic kidney disease, retinopathy, peripheral neuropathy, hypertension, sickle cell trait, obesity and osteoarthritis. Blood investigations demonstrated leucocytosis (white cell count 12.7x10⁹/L) and deranged renal function (creatinine 150 µmol/L; baseline 110 µmol/L). Urine dipstick test was positive for nitrites, ketones and glucose and urine culture isolated mixed growth of bacteria with Candida.

A CT abdomen/pelvis, initially planned on the working diagnosis of acute diverticulitis, revealed a mild left-sided hydroureteronephrosis associated with perinephric inflammatory stranding. Left posterolateral bladder wall thickening and left distal ureteric enhancement were also highlighted (figures 1 and 2). The patient was...

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