18 December 2020
: Case report
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 Watanabe1ABCDEF, Junichi Yasuda1CDEF, Kenji Ashida1ABCDEF*, Yuko Matsuo1CDE, Ayako Nagayama1CDE, Yuka Goto1CDE, Shimpei Iwata1CDE, Masayuki Watanabe2CDE, Jun Sasaki2BCDE, Tomoaki Hoshino2CDE, Masatoshi Nomura3ACDEFDOI: 10.12659/AJCR.928113
Am J Case Rep 2020; 21:e928113
Table 1. Results of laboratory examinations performed at admission.
Parameters | Value | Reference range |
---|---|---|
Blood urea nitrogen (mg/dL) | 20 | 8–21 |
Creatinine (mg/dL) | 0.82 | 0.65–1.07 |
Uric acid (mg/dL) | 4.0 | 3.7–7.0 |
Sodium (mmol/L) | 128 | 138–145 |
Potassium (mmol/L) | 4.4 | 3.6–4.8 |
Chlorine (mmol/L) | 92 | 101–108 |
Plasma osmotic pressure (mOsm/kg•HO) | 292 | 275–290 |
Urine osmolality (mOsm/kg•HO) | 175 | 50–1300 |
Adrenocorticotropic hormone (pg/mL) | 1.1 | 7.2–63.3 |
Cortisol (μg/dL) | 1.67 | 6.24–18.00 |
Dehydroepiandrosterone sulfate (μg/dL) | 6 | 18–391 |
Urine free cortisol (mg/d) | ≤12.5 | 11.2–80.3 |
Arginine vasopressin (pg/mL) | 0.5 | <2.8 |
Thyroid-stimulating hormone (μIU/mL) | 1.440 | 0.500–5.000 |
Free thyroxine (ng/dL) | 0.49 | 0.93–1.70 |
Luteinizing hormone (IU/mL) | <0.3 | 0.79–5.72 |
Follicle-stimulating hormone (IU/mL) | 1.3 | 2.00–8.30 |
Free testosterone (pg/mL) | <0.2 | 0.13–9.88 |
Growth hormone (ng/mL) | 0.98 | ≤0.64 |
Insulin-like growth factor-1 (ng/mL) | 14 | 58–198 |
Plasma renin activity (ng/mL/h) | ≤0.1 | 0.2–2.3 |
Plasma aldosterone concentration (pg/mL) | 15.1 | 29.9–159.0 |