Practical clinical guidelines for contouring the trigeminal nerve (V) and its branches in head and neck cancers.

摘要: Abstract Purpose The trigeminal nerve (V) is a major route of tumor spread in several head and neck cancers. However, only limited data are currently available for its precise contouring, although this absolutely necessary the era intensity-modulated radiation therapy (IMRT). purpose article to present practical clinical guidelines contouring cancers at risk along nerve. Method main types associated with risks branches were comprehensively reviewed based on experience, literature-based patterns failure, anatomy radio-anatomy. A consensus was proposed multidisciplinary approach among oncology experts including oncologists (JBi, ML, MO, VG JB), radiologist (VD) surgeon (CS). These have been endorsed by GORTEC (Head Neck Radiation Oncology Group). Results We provided treatment guidelines, supported detailed figures tables help, branches: ophthalmic (V1), maxillary (V2) manidibular (V3). CT- MRI-based atlas illustrate whole pathway branches. Conclusion Trigeminal invasion an important component natural history various Recognizing radio-anatomy potential routes essential optimal as presented these guidelines.