Da Palmas 38 work is the only prospective and randomized study which compares unilateral stents and bilateral stents. That study does not demonstrate lower morbidity and mortality rates for bilobar drainage which is why routine bilateral drainage is not recommended.
Solo el trabajo de De Palma 38 es prospectivo y aleatorizado y al comparar el stent unilateral versus bilateral no se demuestra que el drenaje bilobar curse con una menor morbimortalidad, por lo que no recomiendan el drenaje bilateral de rutina.