| Type 1 diabetes associated with asymptomatic acromegaly successfully treated with surgery after pregnancy: a case report. | |
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MedLine Citation:
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PMID: 16127208 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report a rare case of type 1 diabetes in a woman associated with acromegaly who was treated with surgery after pregnancy. An 18-year-old woman came to our hospital in April, 1998, complaining of thirst, polydipsia, polyuria, appetite loss, body weight loss of 8 kg in a month, and amenorrhea beginning 2 months earlier. Based on laboratory data, she was diagnosed as having type 1 diabetes mellitus. Although we suspected her of having acromegaly because of high growth hormone (GH) levels (6.9 or 8.5 ng/ml), blood levels of insulin-like growth factor 1 (IGF-1) and IGF-binding protein-3 (IGFBP-3) were within normal range and the circadian rhythm of her blood GH levels was normally maintained. Her blood GH level was elevated to 12.6 ng/ml 15 minutes after a TRH administration. Blood GH levels were suppressed from 49 ng/ml to 1.5 ng/ml 4 hours after an oral administration of 2.5 mg of bromocriptine. A magnetic resonance images (MRIs) showed pituitary swelling, but no nodules were found in the pituitary. Therefore, we diagnosed her as having acromegaly and observed her without surgery, while prescribing diet therapy and intensive insulin therapy for diabetes. We started a treatment of oral administration of 7.5 mg of bromocriptine per day for the acromegaly from April 28, 2000, because her elevated GH was suspected of causing her diabetes to be poorly controlled. During a pregnancy from October, 2000 to September, 2001, diabetic control was improved with increased administration of insulin under a constant dose of bromocriptine. She delivered a normal full-term infant. After the bromocriptine therapy was stopped as she hoped to breastfeed, blood levels of GH and IGF-1 became elevated and her diabetic control deteriorated. As her pituitary tumor observed in pituitary MRIs became larger during the course, a transsphenoidal surgery was performed on March 8, 2002. After the surgery, blood levels of GH and IGF-1 lowered and diabetic control improved again. We concluded as follows: to rule out acromegaly in patients with poorly controlled diabetes, 1) measurements of serum GH and IGF-1 should be performed, and 2) pituitary MRIs should be performed if blood levels of GH or IGF-1 are high. |
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Authors:
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Hiroshi Iwai; Hiroyuki Ito; Sari Ri; Takeshi Harada; Noriyuki Hirota; Takaaki Yamauchi; Toshiyuki Miyatake; Yasuhiro Ohno; Norihiko Aoki |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: Endocrine journal Volume: 52 ISSN: 0918-8959 ISO Abbreviation: Endocr. J. Publication Date: 2005 Aug |
Date Detail:
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Created Date: 2005-08-29 Completed Date: 2005-12-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9313485 Medline TA: Endocr J Country: Japan |
Other Details:
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Languages: eng Pagination: 413-20 Citation Subset: IM |
Affiliation:
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Department of Endocrinology, Metabolism and Diabetes, Kinki University School of Medicine, Osaka. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Acromegaly
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complications*,
pathology,
surgery* Adolescent Diabetes Mellitus, Type 1 / etiology* Female Growth Hormone-Secreting Pituitary Adenoma / complications, pathology, surgery Humans Magnetic Resonance Imaging Pituitary Neoplasms / complications, pathology, surgery Pregnancy Pregnancy Outcome Pregnancy in Diabetics / etiology* |
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