IN THE medical literature, there are only 39 reported cases of neurinoma of the facial nerve. Schmid in 1930 and Schroeder in 1931 were the first to describe such an involvement of the seventh cranial nerve.
A neurinoma is defined as a benign tumor developing from the Schwann cells. It is well encapsulated,1 may be fibrous, hard or soft, and cystic showing degenerative changes.2 It is slowly growing, following the line of lesser resistance, and the surrounding tissues are destroyed to the state of necrosis due to pressure on the nerve.3 Histologically, it is formed of long slender cells, containing an elongated nucleus and a very fine fibrillated cytoplasm. The nuclei are either arranged in palisades or in whorls, which are the microscopic features of the neurinoma.1,4 The stroma is well-vascularized and the blood vessels show frequent hyalinization in their walls.
The symptomatology of the neurinoma
Lavoie R, Gauthier G, Lavoie J. Neurinoma of the Facial Nerve. Arch Otolaryngol. 1967;86(4):374–376. doi:10.1001/archotol.1967.00760050376004