Introduction: Use of ureteric stents is accepted standard practice in the management of ureteric obstruction, ‘forgotten’ indwelling stents can cause encrustation, pyelonephritis, recurrent obstruction, and stent migration and breakage. A stent register should be maintained to check follow-up of such patient to prevent this urological travesty.
Case Report: We are reporting a case of encrustation and unusual large stones formation at both the J end of a forgotten double-J stent in a 35-year-old female presented in our outpatient department for complaints of left flank and lower abdominal pain, burning and increased frequency of micturition for four months.
Conclusion: Indwelling stents can result in complications such as encrustation, pyelonephritis, recurrent obstruction, and stent migration and breakage so their use should be done with caution.

Keywords: Bladder stone, Forgotten Stent, Indwelling Stent, Stenturia, Staghorn calculus, PCNL