ABSTRACT
Diabetes mellitus is a frequent manifestation in patients with acromegaly and it can show up even before the latter manifests. Typically, the diabetes mellitus in these patients does not tend to develop ketosis. We present the case of a patient hospitalized due to diabetic ketoacidosis associated to a perianal abscess. Diabetes mellitus type I was rejected and the presence of insulin-resistance was verified. She required insulin therapy just for three months. The clinical, hormonal and radiological evaluation showed, three years latter, the presence of a hypophyseal tumor producing growth hormone. After performing a trans-sphenoidal adenomectomy, the insulin-therapy could be removed with a normal glycemic profile. This case of acromegaly demonstrates the relationship between growth hormone and glucose metabolism. It can be considered that the ketoacidosis was the first manifestation of the acromegaly, which is exceptional.
