Therapy With Zoledronic Acid in Patients With Multiple Myeloma Stage I

Inclusion Criteria * Evidence of myeloma according to the criteria of the British Columbia Cancer Agency (for the diagnosis, 2 of the 3 criteria must be met): * Evidence of paraprotein in the serum or urine * Bone marrow infiltration with plasma cells which represent more than 10% of the nucleated cells * Radiologically, at least one osteolytic lesion * Asymptomatic patients with Stage I (Durie and Salmon) multiple myeloma Exclusion criteria: * Patients with more than one osteolytic lesion on conventional skeletal radiography * Previous treatment with bisphosphonates * bilirubin \> 2.5 mg/dl * Abnormal renal function as evidenced by: A calculated creatinine clearance \< 30 ml/minute. Creatinine clearance (CrCl) is calculated using the Cockcroft-Gault formula: * CrCl= \[140-age(years)\] x weight(kg)/\[72xserumcreatinine(mg/dL)\] X {0.85 for female patients} * Patients with other malignant diseases or severe concomitant diseases * Potentially fertile patients who are not using a reliable and appropriate method of contraception * Pregnancy or breast-feeding * Participation in another clinical study with an investigational drug within 12 weeks of study entry * Current active dental problems including infection of the teeth or jawbone (maxilla or mandibular); dental or fixture trauma, or a current or prior diagnosis of osteonecrosis of the jaw (ONJ), of exposed bone in the mouth, or of slow healing after dental procedures. * Recent (within 6 weeks) or planned dental or jaw surgery (e.g.. extraction, implants) Other protocol-defined inclusion and exclusion criteria may apply.