Patient description: The patient is a 41-year-old man and a known case of Acromegaly who underwent transsphenoidal surgery 4 months ago. He came to the clinic for the follow up lab studies after his primary resection surgery. His lab study shows the IGF-1 level of 4.5 ULN adjusted by sex and age. His random GH level is 4 ug/L. The recent brain MRI confirmed the residual pituitary tumor. His past medical history is only significant for acromegaly due to pituitary adenoma and the recent surgery. After his surgery he takes only vitamin D and multivitamins.

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  Acromegaly Adults (age > 18 years) with diagnosis of Acromegaly ( previously confirmed by an elevated IGF-1 level) 2. IGF-1 concentrations> 10% above the upper limit of normal at screening 3. If the patient have undergone surgical resection of a pituitary adenoma, A minimum of two months must have elapsed post surgery prior to enrollment 4. May have a history of radiotherapy 5. Stable pituitary hormone supplements(x months) prior to baseline visit 6. if female , ( □ not applicable) 1. not pregnant (as evidence by negative serum pregnancy test) or lactating; and 2. If childbearing potential, agree to use a medically acceptable form of contraception (such as oral, implantable, or barrier contraception) from the screening, for the duration of the study, and for at least on month after study discontinuation or completion. Childbearing potential is defined as women who are not surgically sterile or not at least one year postmenopausal. 7. Sign and date an consent form document indicating that the subject (or legally acceptable representative) has been informed of and agrees to all pertinent aspects of trial  Have other conditions that may result in abnormal GH and/or IGF-1 concentrations (e.g., severe hepatic disease, severe renal disease Malnutrition, treatment with levodopa) 2. Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 3 x Upper limit of normal or clinically significant hepatic disease 3. Prior somatostatin analog therapy within 6 months of the screening visit 4. Other medical therapy for acromegaly for 6 weeks to screening visit 5. Visual field defects or other neurological symptoms due to tumor mass 6. Have known or suspected drug or alcohol abuse 7. Have received an investigational medication within four week prior to screening or is scheduled to received any investigational medication during the study 8. Do not have ability to fully comprehend the nature of the study, to follow instructions, cooperate with study procedures, and/or are unable to adhere to the visit scheduled outlined in the protocol 9. Have other severe acute or chronic medical or psychiatry condition or Laboratory abnormality that may increase the risk associated with study Participation or study drug administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study 10. Patient who have known hypersensitivity to Sandostatin acetate or other related drug or compound 11. Patient with current gallstones 12. Patient who have received supraphysiologic doses of glucocorticoid within the past 6 months (except for peri-operative (<3 days duration) of dexamethasone) or who currently received chemotherapeutics agents, or exogenous growth hormone 13. Patients who have received other investigational drugs administered or Received within 30 days of study entry 14. Patients who exhibit symptoms indicative of intolerance during the 2 weeks Course of Sandostatin injection, s.c