Megacalycosis – Challenges in management and long-term functional follow-up

In brief

This article addresses megacalycosis, a rare congenital kidney anomaly characterized by non-obstructive calyceal dilation with uncertain pathogenesis. Key clinical challenges include differentiating it from obstructive hydronephrosis and establishing appropriate long-term monitoring protocols using sonographic and functional imaging.

• Megacalycosis is a rare non-obstructive congenital kidney anomaly with unclear pathogenesis involving calyceal developmental abnormalities.
• Management relies on serial sonographic and functional monitoring rather than surgical intervention.
• Critical to distinguish megacalycosis from obstructive hydronephrosis, though differentiation can be diagnostically challenging.
• Proposed mechanisms include mixed calyceal developmental stages, structural malformation, or transient self-limiting obstruction.
• Long-term functional follow-up is essential given the non-obstructive nature and potential for preserved renal function.

Written by the GCMD Library team from the article.