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. 2008 Jan;90(1):45–50. doi: 10.1308/003588408X242268

Table 3.

Various causes of filling defects in the pelvicalyceal system seen on radiological imaging

  • Blood clots

  • Fibro-epithelial polyps

  • Fungal mycetoma

  • Radiolucent stones

  • Pelviureteritis cystica

  • Sloughed papilla (papillary necrosis)

  • Benign vascular tumours/AV malformations

  • Transitional cell carcinoma