What is the most likely diagnosis?
Tuberculous auto-nephrectomy - also known as 'putty kidney'.
Is it safe to conclude that right kidney is non-functioning or non-excreting, based on the CT features?
A nuclear DTPA scan is recommended to assess the functional status. However, in the case, contrast excretion in right ureter is seen during excretory as well as delayed scan, and thus excludes completely non-functional status, but no accurate estimate of residual renal function can be generated from this CT.
A noticeable sharp kink is seen at pelviureteric junction in many such cases (not however in this case). What's the eponymous name given to such kink, and what does it mean?
Kerr's kink is the term used to denote distortion of the pelviureteric junction due to adjacent parenchymal fibrosis secondary to prolonged inflammation.
A non-opacified calyx or 'phantom calyx' is usually seen in renal tuberculosis due to infundibular strictures. It is also seen in which other renal condition?
Transitional cell carcinoma may obstruct the infundibulum, also leading to a 'phantom calyx'.
What other abnormalities of the urinary collecting system (ureter and bladder) are seen in chronic infection with TB?
Saw-tooth (ragged edges) ureter, pipestem (rigid smooth) ureter, or corkscrew (tortuous) ureter, and thimble (small contracted) urinary bladder are common findings in urinary tract TB.
Shrunken right kidney with extensive amorphous calcification.