Abstract

A 6-year-old Wirehair Dachshund had a meningioma around the optic nerve that caused exophthalmos. A benign mesenchymal tumor was suspected based on the cytologic pattern of a fine-needle aspirate, and a meningioma was diagnosed by histopathologic examination. In addition to the meningioma cells, the cytologic smears included groups of cells from apparently 4 layers of normal retina. In particular, uniform rod-shaped structures in the cytologic sample could suggest rod-shaped bacteria, but these structures were identified as cylindrical outer segments of photoreceptor rod cells. Other retinal structures recognized included pigmented epithelial layer cells with their uniquely formed pigment granules, the characteristic bi-lobed, cleaved nuclei from the outer nuclear layer, and nerve tissue likely from the outer plexiform layer of the retina.

Keywords

Cytology; ocular histology; retina; rods

Published in

Veterinary Clinical Pathology
2013, Volume: 42, number: 2, pages: 234-237
Publisher: WILEY-BLACKWELL

SLU Authors

• Tvedten, Harold

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

• Hillström, Anna

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Pathobiology


Publication identifier

DOI: https://doi.org/10.1111/vcp.12046

Permanent link to this page (URI)

https://res.slu.se/id/publ/55963