Inclusion Criteria

• Patients who have completed the 15 days of Pasireotide treatment in the CSOM230B2208 study and have achieved normalization of 24-hour urinary free cortisol. Patients who did not achieve normalization of 24 -hour urinary free cortisol may be enrolled if in the opinion of the investigator the patient is getting significant clinical benefits from treatment with Pasireotide .
• The patient did not experience any unacceptable adverse events of tolerability issues during the original 15 day treatment.
• Female patients of child bearing potential who have not undergone clinically documented total hysterectomy and/or ovariectomy, or tubal ligation must agree to use barrier contraception throughout the course of the extension study, and for one month after the study has ended

Exclusion Criteria

• Patients who have developed poorly controlled diabetes mellitus as indicated by ketoacidosis or HgbA1C > 10 since starting [study CSOM230B2208]
• Patients with persistent ALT/AST or alkaline phosphatase levels more than 2.5X ULN, serum creatinine > 2.0 X ULN, serum bilirubin > 2 X ULN
• Patients with abnormal coagulation (PT and PTT elevated by 30% above normal limits), WBC <3.0x1'000'000'000/L; Hgb <12.0g/dL for females, Hgb <13.0g/dL for males; PLT <100x1'000'000'000/L

Other protocol-defined inclusion / exclusion criteria may apply.