Impaired Water Excretion in a Patient with Sarcoidosis and Diabetes Insipidus
Author Information
Author(s): Yoshioka Katsunobu, Tanaka Nagaaki, Yamagami Keiko, Inoue Takeshi, Hosoi Masayuki
Primary Institution: Osaka City Sumiyoshi Hospital
Hypothesis
Can masked diabetes insipidus be mediated by arginine vasopressin-independent mechanisms?
Conclusion
The study found that masked diabetes insipidus can occur due to mechanisms that do not involve arginine vasopressin.
Supporting Evidence
- The patient had undetectable levels of arginine vasopressin during the hypertonic saline test.
- After glucocorticoid therapy, urine osmolality was consistently below plasma levels.
- The diagnosis of sarcoidosis was confirmed through a skin biopsy.
Takeaway
A man with a condition called sarcoidosis had trouble with water excretion, and it turned out that this was not because of a hormone called AVP.
Methodology
The patient underwent a hypertonic saline infusion test before and after glucocorticoid replacement therapy.
Limitations
The study is based on a single case, which may limit the generalizability of the findings.
Participant Demographics
A 28-year-old man.
Digital Object Identifier (DOI)
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