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Explore a comprehensive case study examining a 9-year-old girl presenting with hypernatraemia, excessive thirst, and polyuria through this medical lecture by Miss Isobel Hambleton from The Royal College of Pathologists. Follow the diagnostic journey from initial presentation through water deprivation testing that confirms Diabetes Insipidus, and discover how MRI and CT brain imaging reveal a pituitary adenoma causing loss of pituitary function and visual field abnormalities. Learn essential concepts in sodium homeostasis, understand the systematic approach to investigating polyuria, and master pituitary function testing methodologies. Gain insights into the complex interplay between electrolyte disorders and endocrine dysfunction while developing clinical reasoning skills for similar challenging pediatric cases involving electrolyte imbalances and pituitary pathology.
