Neurogenous tumors within the thorax. A clinicopathological evaluation of forty-eight cases

Intraorbital Abducens Nerve Schwannoma

“…They are also observed in schwannomas arising from the vestibular or vagal nerve, jugular foramen, and thoracic neurilemmomas (1).…”

Neuropathology for the Neuroradiologist: Antoni A and Antoni B Tissue Patterns

“…Prominent fibrous stroma is rarely punctuated by attenuated bands of hyalinized cartilage, particularly in mediastinal tumors. 30 Cysts as described above, focal calcification, and mucinous and xanthomous change involving the tumor cells are also common and thought to represent a degenerative phenomenon. Xanthomatous changes can produce areas that are yellow to the naked eye and that demonstrate aggregated foamy macrophages.…”

Giant solitary ancient schwannoma of the cervico-thoracic spine: a case report and review of the literature

“…These changes are believed to occur because it takes a long time for schwannomas to develop 4 . The term 'ancient schwannoma' was first reported by Ackerman et al to describe schwannomas with calcification 5 . Their histology generally displays a biphasic pattern with areas of highly ordered cellularity (Antoni type A) and less cellular areas where a highly myxoid matrix predominates (Antoni type B) 6 .…”