Use of Non-invasive Optical Analysis in Neurosurgery

Inclusion Criteria: * Candidates for surgery due to a confirmed clinical and radiological diagnosis of cranial intrinsic or extrinsic tumour - any histological diagnosis confirming neuro-oncological disease, including primary and secondary disease * Agreed to take part to the present research protocol and signed proper informed consent form Exclusion Criteria: * Suspected differential diagnosis of pathological condition affecting central nervous system other than neuro-oncological disease - including demyelinating diseases, infections, brain traumas / haematomas, vascular or auto-immune diseases * Patients not capable to give consent - not in condition of understanding, processing and retaining information