Objective and importance: A rare case of gliosarcoma in a 61-year-old woman is presented with a stable situation over 22 years with an excellent quality of life.
Clinical presentation: The patient was initially symptomatic and was operated on in 1975 for a deep-seated left parietal gliosarcoma. During the following 20 years, she was clinically asymptomatic until she complained of increasing headache in 1995. Neuroradiological imaging showed a sharply demarcated lesion on MRI at the former operative site, which was operated on again. Four months later, the residual tumour did grow again.
Intervention: As radiation therapy could not stop tumour progression and the neurological status worsened, the patient was operated on again for a massive tumour mass in the left parieto-occipital region, filling out nearly all of the previous resection cavity. Despite radio-immunotherapy, the patient finally died 22 years after the first discovery of the tumour.
Conclusion: The present case shows that, in rare instances, gliosarcomas may show prolonged survival, although the underlying pathogenetic mechanisms for this clinical behaviour are not understood.