“ Inflammation or ischaemic necrosis at the tip of the papilla that may then slough off and obstruct the collecting system. Causes include p...
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Inflammation or ischaemic necrosis at the tip of the papilla that may then slough off and obstruct the collecting system. Causes include pyelonephritis, obstruction, sickle-cell, TB, cirrhosis, analgesic, renal vein thrombosis, diabetes.
CT
• Sloughed papilla appears as a filling defect in the collecting system
• The calyx appears clubbed due to loss of the papilla
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