HÃ¼rthle cell cancer has the highest incidence of metastasis among the differentiated thyroid cancers. Metastatic disease is reported at the time of initial diagnosis in 10-20% of patients and in 34% of the patients overall.
By Michael Perry, M.D. Foraminal narrowing, or foraminal stenosis, is a condition of the spine that can cause pain and other symptoms resulting from spinal nerve root compression. At every level of the spine, a pair of nerve roots runs through the spinal column via small openings called foramina (singular: foramen).
The foramen spinosum is a foramen through the sphenoid bone situated in the middle cranial fossa. It is one of two foramina in the greater wing of the sphenoid bone. The foramen ovale is one of these two cranial foramina, situated directly anterior and medial to the foramen spinosum.The spine of sphenoid falls medial and posterior to the foramen. Lateral to the foramen is the mandibular fossa, and posterior is the Eustachian tube.he foramen ovale is one of these two cranial foramina, situated directly anterior and medial to the foramen spinosum. The spine of sphenoid falls medial and posterior to the foramen. Lateral to the foramen is the mandibular fossa, and posterior is the Eustachian tube.