TY - CHAP M1 - Book, Section TI - Diabetes Insipidus (DI) A1 - Hay, Jr, William W. A1 - Levin, Myron J. A1 - Deterding, Robin R. A1 - Abzug, Mark J. PY - 2017 T2 - Quick Medical Diagnosis & Treatment Pediatrics AB - Central DI is an inability to synthesize and release vasopressinWithout vasopressin, the kidneys cannot concentrate urine, causing excessive urinary water lossMost common causesMidline defects (septo-optic dysplasia, holoprosencephaly)Trauma (surgery, injury)Infiltrative/neoplastic disease (tumors such as craniopharyngioma, germinoma, Langerhans cell histiocytosis, sarcoidosis)Infectious (meningitis)IdiopathicTraumatic DI often has three phasesInitially caused by edema in the hypothalamus or pituitary areaIn 2–5 days, unregulated release of vasopressin from dying neurons causes the syndrome of inappropriate secretion of antidiuretic hormone (SIADH)Finally, permanent DI occurs if a sufficient number of vasopressin neurons are destroyedOf note, germinomas often present with DI, whereas DI in craniopharyngioma is more often the result of neurosurgical intervention SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1145455068 ER -