DISSOLUTION OF CALCIFIED GALLSTONES .2. EVALUATION OF EDETIC ACID PREPARATIONS FOR DISSOLUTION OF RESIDUE AFTER IN-VITRO METHYL TERT-BUTYL ETHER TREATMENT

RATIONALE AND OBJECTIVES. The authors assessed the potential of edetic acid (EDTA) preparations to dissolve the residue of calcified gallsto nes partially treated with methyl tert-butyl ether (MTBE). METHODS. Ni neteen triplets (57 gallstones) were submitted to dissolution in EDTA, urea-EDTA, and an MTBE control for 48 hours after initial partial dis solution in MTBE for 24 hours. Results were compared with findings at specimen computed tomography and crystallographic analysis. All data w ere corrected for differences in stone size.