A case of dystrophia myotonica with an almost entirely suprasellar massive pituitary adenoma extending up into both lateral ventricles is presented. The diagnosis of a parapituitary lesion in dystrophia myotonica is in itself not easy. Once diagnosed, the identification of the nature of the tumour presents problems. Patients with myotonic dystrophy are not good candidates for surgical exploration. A presumptive pathological diagnosis may have to be made on the basis of the radiological changes and the use of radiotherapy judged accordingly. It is suggested that in the presence of curvilinear calcification above the sella on the skull radiographs and a high concentration of the radioactive isotope on the brain scintigram, the possibility of chromophobe adenoma ought to be considered, even though the pituitary fossa is not necessarily expanded.
ASJC Scopus subject areas
- Clinical Neurology