Plexiform pigmented schwannoma of the uvea

Surv Ophthalmol. 2006 Mar-Apr;51(2):162-8. doi: 10.1016/j.survophthal.2005.12.004.

Abstract

Schwannoma is a slow growing solitary tumor that preferentially involves spinal nerve roots, and sympathetic, cervical, and vagus nerves. There are several clinico-pathologic variants of schwannoma, including schwannoma with a degenerative change (ancient schwannoma), cellular schwannoma, plexiform schwannoma, epithelioid schwannoma, and melanotic schwannoma. About 10% of cases of schwannomas are associated with multi-system disorders such as neurofibromatosis, schwannomatosis, multiple meningiomas, and Carney complex. Schwannoma rarely present as an intraocular tumor and is often misdiagnosed as malignant melanoma. Immunohistochemical positivity with S-100 stain and demonstration of long-spaced collagen (Luse bodies) are helpful in establishing the diagnosis. In this article, we review the clinical and histopathological findings of a sporadic plexiform pigmented schwannoma involving the iris, ciliary body, and the choroid.

Publication types

  • Case Reports

MeSH terms

  • Child
  • Diagnosis, Differential
  • Female
  • Follow-Up Studies
  • Humans
  • Iris / diagnostic imaging
  • Iris / pathology
  • Microscopy, Acoustic
  • Neurilemmoma / diagnostic imaging
  • Neurilemmoma / pathology*
  • Uveal Neoplasms / diagnostic imaging
  • Uveal Neoplasms / pathology*