trigeminal nerve neoplasm (MONDO_0001420) is benign and malignant neoplasms which arise from or metastasize to the trigeminal or fifth cranial nerve which provides sensory innervation to the face, oral cavity and sinuses and the muscles of mastication. Clinical features may include facial pain or sensory loss or weakness of jaw closure. Also known as: cranial nerve V neoplasms, cranial nerve V tumors, cranial nerve V tumours, fifth cranial nerve neoplasm, fifth cranial nerve tumor, fifth cranial nerve tumour, neoplasm of fifth cranial nerve, neoplasm of the fifth cranial nerve.