Case report presents hypernatremia and polyuria in a patient with metastatic breast cancer, suggesting an underlying diagnosis.
A 58-year-old woman with breast cancer with multiple prior courses of systemic treatments presented with hypotension, hypoxia, significant polyuria, and polydipsia. Mild thickening of the pituitary stalk was seen, while no discrete sellar or suprasellar masses were noted. What is your diagnosis?
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Shah et al. (2026) studied this question.
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