Hyponatremia with Loss of High Signal Intensity in the Posterior Pituitary Lobe on T1-weighted Magnetic Resonance Imaging

Autor:	Yoshihiro Yamanaka, Masayuki Kitagawa, Ikuro Ohta, Kazutoshi Fukase, Toru Adachi, Junitsu Ito, Tadashi Katagiri
Rok vydání:	2017
Předmět:	medicine.medical_specialty Vasopressin hyponatremia Urinary system Prohormone Case Report 030204 cardiovascular system & hematology depletion of the posterior pituitary 03 medical and health sciences 0302 clinical medicine Pituitary Gland Posterior Posterior pituitary Internal medicine Internal Medicine medicine Humans Aged 80 and over Heart Failure medicine.diagnostic_test business.industry Magnetic resonance imaging General Medicine medicine.disease Brain natriuretic peptide Magnetic Resonance Imaging lack of high signal intensity in the posterior pituitary lobe Treatment Outcome medicine.anatomical_structure Endocrinology Heart failure Female Natriuretic Agents Hyponatremia business hormones hormone substitutes and hormone antagonists 030217 neurology & neurosurgery medicine.drug
Zdroj:	Internal Medicine
ISSN:	1349-7235 0918-2918
Popis:	Herein, we report on an 82-year-old woman who presented with anorexia. The patient had hyponatremia with preserved urinary osmotic pressure. T1-weighted magnetic resonance imaging (MRI) showed a lack of high signal intensity (SI) in the posterior pituitary lobe. Based on the patient's high levels of N-terminal prohormone of brain natriuretic peptide (NT-proBNP), heart failure was suspected. The heart failure may have caused arginine vasopressin (AVP) secretion. The depletion of AVP secretory granules may therefore cause the posterior pituitary gland to disappear on T1-weighted MRI.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::139dc01f7414be99db1b7561655bb102 https://doi.org/10.2169/internalmedicine.8616-16 Zobrazit plný text záznamu