Journal
ENDOCRINE JOURNAL
Volume -, Issue -, Pages -Publisher
JAPAN ENDOCRINE SOC
DOI: 10.1507/endocrj.EJ22-0066
Keywords
Acromegaly; Adenoma; Insulin-like growth factor-1 (IGF-1); Subclinical
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Subclinical acromegaly is a rare condition that is often undiagnosed, but most patients experience clinical improvement after treatment.
Patients with acromegaly usually present with the classical signs of acromegaly, whereas patients without the specific signs or symptoms are rarely diagnosed. This unique entity can be named ???subclinical acromegaly???. This was a retrospective study. Our study group consisted of 6 patients (4 females) with incidentally diagnosed acromegaly, most following head MRI for unrelated reasons and without the specific signs of acromegaly. Mean age at diagnosis was 48.8 ?? 19.2 years. Baseline IGF-1 ranged between 1.3???2.0 ?? upper limit of normal (ULN). MRI depicted a pituitary microadenoma in 5 patients, and one patient presented with a 12 mm intra-sellar macroadenoma. Mean calculated SAGIT clinical score was 4.8. Three patients underwent trans-sphenoidal resection; two achieved hormonal remission and one improved but did not normalize IGF-1 following surgery. Four patients (including one following surgery) were given somatostatin analogs, and three normalized IGF-1. Several patients improved clinically following treatment, reporting improvement in snoring, hypertension, or weight loss, and pituitary adenoma decreased in size in 2 patients that responded to medical treatment. We report a series of 6 patients with very mild and subclinical acromegaly. It is uncertain whether all such patients will gain clinical benefit from treatment, but most experienced clinical improvement due to treatment.
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