2005, Number 1
<< Back Next >>
Med Int Mex 2005; 21 (1)
Acromegaly: remission following surgical intervention
Cabello UNA, Cárdenas ESA, Oliveros RA, Tamez PHE, González MPM
Language: Spanish
References: 26
Page: 32-43
PDF size: 58.54 Kb.
ABSTRACT
Background: Acromegaly is a disorder of somatic growth, its prevalence ranges from 40 to 60 cases per million. Growth hormone secreting pituitary adenoma causes 99% of the cases.
Objective: To describe the results of the transsphenoidal surgery as initial treatment of growth hormone secreting pituitary adenoma, in 46 acromegalic patients.
Material and methods: We retrospectively analyzed the results of transsphenoidal surgery (performed by 11 surgeons) as initial therapy for GH-secreting pituitary adenomas in 46 acromegalic patients. As remission criteria, we used a postoperative random GH level of 5 ng/mL, there were no clinical symptoms and no subsequent therapy.
Results:/ After surgery, 14 patients (30.4%) achieved remission, 58.3% of the patients with microadenomas and 20.5% of the patients with macroadenomas. Remission rate was also related to preoperative GH levels. The incidence of major postoperative complications was of 15.2%, without perioperative deaths.
Conclusions: Our results are lower than those from published series, but confirm that surgery provides an adequate initial treatment for GH-secreting pituitary adenomas, which depend on experience gained from total hypophysectomy, size and extrasellar growth of the tumor, and preoperative GH level. We need to improve our results and follow collaborative guidelines of study and treatment for these patients, at the endocrinology and neurosurgery services, and to limit the number of surgeons to gain great experience.
REFERENCES
Ben-Shlomo A, Melmed S. Acromegaly. Endocrinol Metab Clin North Am 2001;30:565-83.
Colao A, Ferone D, Marzullo P, Lombardi G. Systemic complications of acromegaly: epidemiology, pathogenesis, and management. Endocr Rev 2004;25:102-52.
Melmed S. Acromegaly. N Engl J Med 1990;322:966-77.
Merza Z. Modern treatment of acromegaly. Postgrad Med J 2003;79:189-94.
Peacey SR, Toogood AA, Veldhuis JD, Thorner MO, Shalet SM. The relationship between 24-hour growth hormone secretion and insulin-like growth factor 1 in patients with successfully treated acromegaly: Impact of surgery and radiotherapy. J Clin Endocrinol Metab 2001;86:259-66.
Cook DM, Ezzat S, Katznelson L, Kleinberg DL, Laws ER, Nippoldt TB, et al. American Association of Clinical Endocrinologist Medical Guidelines for clinical practice for the diagnosis and treatment of acromegaly. Endocr Pract 2004;10:214-25.
Abosch A, Blake JT, Lamborn KR, Hannegan LT, Applebury CB, Wilson CB. Transsphenoidal microsurgery for growth hormone secreting pituitary adenomas: Initial outcome and long-term results. J Clin Endocrinol Metab 1998;83:3411-8.
Kreutzer J, Vance ML, Lopes MBS, Laws ER. Surgical management of GH-secreting pituitary adenomas: An outcome study using modern remission criteria. J Clin Endocrinol Metab 2001;86:4072-7.
Kaltsas GA, Isidori AM, Florakis D, Trainer PJ, Camacho-Hubner C, Afshar F, et al. Predictors of the outcome of surgical treatment in acromegaly and the value of the mean growth hormone day curve in assessing postoperative disease activity. J Clin Endocrinol Metab 2001;86:1645-52.
Krieger MD, Couldwell WT, Weiss MH. Assessment of long-term remission of acromagaly following surgery. J Neurosurg 2003;98:719-24.
Atkinson JLD, Nippoldt TB. Pituitary neurologic surgery: A unique subspecialty in evolution. Endocr Pract 2002;8:356-61.
Freda PU, Wardlaw SL, Post KD. Long-term endocrinological follow-up evaluation in 115 patients who underwent transsphenoidal surgery for acromegaly. J Neurosurg 1998;89:353-8.
Swearingen B, Barker FG, Katznelson L, Biller BMK, Grinspoon S, Klibanski A, et al. Long-term mortality after transsphenoidal surgery and adjunctive therapy for acromegaly. J Clin Endocrinol Metab 1998;83:3419-26.
Fahlbusch R, Honegger J, Buchfelder M. Surgical management of acromegaly. Endocrinol Metab Clin North Am 1992;21:669-92.
Lindholm J, Giwereman B, Giwereman A, Astrup J, Bjerre P, Skakkebaek NE. Investigation of the criteria for assessing the outcome of treatment in acromegaly. Clin Endocrinol (Oxf) 1987;27:553-62.
Bates AS, Van’t Hoff W, Jones JM, Clayton RN. Does treatment of acromegaly affect life expectancy? Metabolism 1995b;44(Suppl 1):1-5.
Giustina A, Barkan A, Casanueva FF, Cavagnini F, Frohman L, Ho K, et al. Criteria for cure of acromegaly: A consensus statement. J Clin Endocrinol Metab 2000;85:526-9.
Grisoli F, Leclerq T, Jaquet P, Guibout M, Winteler JP, Hassoun J, et al. Transsphenoidal surgery for acromegaly. Long term results in 100 patients. Surg Neurol 1985;23:513-9.
Ross DA, Wilson CB. Results of transsphenoidal microsurgery for GH-secreting pituitary adenoma in a series of 214 patients. J Neurosurg 1988;68:854-67.
Tindall GT, Oyesiku NM, Watts NB, Clark RV, Christy JH, Adams DA. Transsphenoidal adenectomy for growth-hormone secreting pituitary adenomas in acromegaly: outcome analysis and determinants of failure. J Neurosurg 1993;78:205-15.
Van’t Verlaat JW, Nortier JW, Hendricks MJ, Bosma NJ, Graamans K, Lusben H, et al. Transsphenoidal microsurgery as primary treatment in 25 acromegaly patients: results and follow-up. Acta Endocrinol (Copenh) 1998;117:154-8.
Sheaves R, Jenkins P, Blackburn P, Huneidi AH, Afshar F, Medbak S, et al. Outcome of transsphenoidal surgery for acromegaly using strict criteria for surgical cure. Clin Endocrinol (Oxf) 1996;45:407-13.
Shalet SM. Biochemical monitoring of disease activity after surgery for acromegaly (Ed). J Clin Endocrinol Metab 2004;89:492-4.
De P, Rees DA, Davies N, John R, Neal J, Mills RG. Transsphenoidal surgery for acromegaly in Wales: Results based on stringent criteria of remission. J Clin Endocrinol Metab 2003;88:3567-72.
Biermasz NR, van Dulken H, Roelfsema F. Direct postoperative and follow-up results of transsphenoidal surgery in 19 acromegalic patients pretreated with octreotide compared to those in untreated matched controls. J Clin Endocrinol Metab 1999;84:3551-5