Abstract

To the Editor:

In a previous letter to the editor, my colleagues and I presented a long-term glioblastoma survivor.¹ The patient lived more than 13 and a half years after initial glioblastoma diagnosis and died shortly after the publication of that letter. A year before that, the patient presented with a new, large, shaggy mass in the left frontal lobe with central necrosis and midline herniation. The old lesion was in the right temporal lobe. Unfortunately, the patient and her family decided not to do a biopsy. The old pathological slides of our patient were re-examined and glioblastoma with sarcomatoid (Fig. A) and primitive neuroectodermal tumor (PNET) features (Fig. B) was confirmed. This is a highly malignant tumor with a bad prognosis.