Spontaneous renal calyceal rupture from distal ureteric tiny stone: a rare case report and literature review

Pelvicalyceal rupture is a rare but clinically significant condition often associated with ureteral obstruction. We report a 24-year-old female presenting with acute right flank pain, nausea, and vomiting caused by a 3 mm distal ureteric stone. Imaging revealed hydroureteronephrosis with urine extravasation. Immediate double-J stent placement successfully resolved the obstruction and rupture. At a one-month follow-up, the patient showed complete recovery without recurrence. This case highlights the importance of timely diagnosis and intervention, even in tiny ureteric stones, to prevent severe complications.