Solitary fibrous tumour of the pleura (SFTP) is a rare primary tumour of the 
pleura associated with 4% of cases with a paraneoplastic hypoglycaemia, termed 
Doege-Potter syndrome (DPS). We report a case of DPS presenting with severe coma 
in a 90-year-old woman. The cause was a malignant SFTP treated with surgical 
resection, from which the patient made a full recovery with prevention of 
recurrent hypoglycaemia. Surgical resection of the SFTP presenting with 
symptomatic hypoglycaemia should be considered even in elderly patients.