after external beam radiation therapy for acromegaly

.A GH-secreting pituitary adenoma does not only lead to clinical signs and symp-toms, like acral enlargement and soft tissue swelling, but may also be accompanied by visual field defects and acuity loss caused by tumour compression on the optic nerves or chiasm, often seen in combination with pituitary hormone insufficiencies.Surgery, drug therapy with somatostatin analogs and external beam radiation therapy are currently the available treatment options