PMC5099475_01
Evolution of serum Na levels since the diagnosis and treatment (03/01/2013) of glossopharyngeal squamous cell carcinoma until six months after discharge from Internal Medicine Department (03/16/2014). The moment of hospital admission is marked with the red arrow (10/23/2013).
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fig1
Looking back into his past medical file, as shown in Figure 1, we discovered that our patient had been hyponatremic ever since diagnosed with neck cancer. The mild fluid restriction (maximum 1500 mL/day), normal Na intake, and the avoidance of any medication that could affect sodium levels allowed the maintenance of Na concentration close to physiological limit, for more than 6 month after discharge (Figure 1).