4th April 2024

A 39-year-old gentleman came in with increasing thirst and polyuria. He is known to have Type 1 diabetes mellitus

A 39-year-old gentleman came in with increasing thirst and polyuria. He is known to have Type 1 diabetes mellitus. He has a hearing aid due to his chronic deafness and he is under the ophthalmology team for early onset of optic atrophy. Test results showed that his random glucose was 8.2 mmol/L and HbA1c was 38 mmol/mol. He does not experience any long-term complications from his diabetes mellitus and takes his insulin compliantly. His GP has performed a urine osmolality test which was 255mOsmol/kg. What is the most likely congenital condition that this patient has?

Select the SINGLE most appropriate option from the list below. Select ONE option only.