Primary intracranial collision tumors are rare in patients without predisposing factors. We report such a case in a 42-year-old female who presented with headaches and altered mental status. Imaging revealed a single heterogeneous. rim-enhancing lesion in the left parieto-occipital periventricular region. https://www.parisnaturalfoodes.shop/product-category/bio-coenz-benfotiamine-b1/