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18 December 2020: Articles

Masked Diabetes Insipidus Hidden by Severe Hyponatremia: A Case of Pituitary Metastasis of Lung Adenocarcinoma

Unusual clinical course, Challenging differential diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Adverse events of drug therapy , Educational Purpose (only if useful for a systematic review or synthesis)

Miki Watanabe A , Junichi Yasuda C , Kenji Ashida A* , Yuko Matsuo C , Ayako Nagayama C , Yuka Goto C , Shimpei Iwata C , Masayuki Watanabe C , Jun Sasaki B , Tomoaki Hoshino C , Masatoshi Nomura A

DOI: 10.12659/AJCR.928113

Am J Case Rep 2020; 21:e928113

Table 1. Results of laboratory examinations performed at admission.

ParametersValueReference range
  Blood urea nitrogen (mg/dL)208–21
  Creatinine (mg/dL)0.820.65–1.07
  Uric acid (mg/dL)4.03.7–7.0
  Sodium (mmol/L)128138–145
  Potassium (mmol/L)4.43.6–4.8
  Chlorine (mmol/L)92101–108
  Plasma osmotic pressure (mOsm/kg•HO)292275–290
  Urine osmolality (mOsm/kg•HO)17550–1300
  Adrenocorticotropic hormone (pg/mL)1.17.2–63.3
  Cortisol (μg/dL)1.676.24–18.00
  Dehydroepiandrosterone sulfate (μg/dL)618–391
  Urine free cortisol (mg/d)≤12.511.2–80.3
  Arginine vasopressin (pg/mL)0.5
  Thyroid-stimulating hormone (μIU/mL)1.4400.500–5.000
  Free thyroxine (ng/dL)0.490.93–1.70
  Luteinizing hormone (IU/mL)0.79–5.72
  Follicle-stimulating hormone (IU/mL)1.32.00–8.30
  Free testosterone (pg/mL)0.13–9.88
  Growth hormone (ng/mL)0.98≤0.64
  Insulin-like growth factor-1 (ng/mL)1458–198
  Plasma renin activity (ng/mL/h)≤0.10.2–2.3
  Plasma aldosterone concentration (pg/mL)15.129.9–159.0

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923