Coroner's Finding: McMAHON Gary Michael

63y · Male·pancreatic carcinoma

Gary Michael McMahon, aged 63, died of pancreatic carcinoma at Royal Adelaide Hospital on 5 January 2005 while detained under the Mental Health Act. He was admitted following collapse at home with a history of diabetes, alcohol abuse, and self-harm. Initial assessment identified frontal lobe encephalopathy and behavioural disturbance warranting detention. A frontal meningioma was subsequently diagnosed; neurosurgery was planned but deferred due to electrolyte abnormalities. Terminal pancreatic cancer with liver metastases was later discovered, leading to palliative care only. The coroner found detention was lawful and the deceased received appropriate care. This case highlights the complexity of managing patients with concurrent neurological, psychiatric, and malignant conditions, and the importance of ongoing reassessment of treatment plans when new diagnoses emerge.