ArticleUrology case reports2026
Spontaneous retrograde migration of a lower ureteric calculus in a child with primary non-refluxing obstructive megaureter: a rare case report.
Article in Urology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Primary non-refluxing megaureter associated with ureteric calculi in children is rare. Spontaneous retrograde migration of ureteric calculi is an exceptionally rare phenomenon, reported only in adults. 9-year-old boy presented with left flank pain and haematuria. Initial imaging demonstrated a 7-mm distal ureteric calculus with obstructive megaureter. Subsequent imaging unexpectedly revealed spontaneous retrograde migration of calculus to pelvis, without any history of stone expulsion in urine. Operative findings confirmed a narrow distal ureteric segment, consistent with primary non-refluxing obstructive megaureter. To our knowledge, this is the first reported paediatric case of spontaneous retrograde migration of a ureteric calculus in world literature.
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