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Vet Ophthalmol. 2007 Sep-Oct;10(5):320-2.

Keratoacanthoma of the spectacle in a Boa constrictor.

Author information

1
Haslev Dyreklinik, Haslev, Denmark. haslevdyreklinik@vetnet.dk

Abstract

ANIMAL STUDIED:

A Royal Boa constrictor presented with retained spectacle of the right eye and a tumor-like appearance of the left eye.

PROCEDURE:

The snake was euthanized, the head fixed in buffered formaldehyde, and histologic examination of both spectacles and both eyes performed.

RESULTS:

The left orbital rim encircled a solid, scaly mass projecting 5-6 mm from the spectacular area. A cup-shaped tumor with a central keratin plug was observed microscopically. There was a thickening of the proliferating squamous epithelium, with squamous eddies and single cell keratinization. A few mitotic figures were seen in the basal layers but the tumor showed no infiltrative growth. The same morphology was observed in the right eye but to a lesser extent. The remaining parts of the eye were normal.

CONCLUSIONS:

The diagnosis was keratoacanthoma and this is the first reported keratoacanthoma of the spectacle in a reptile. Keratoacanthoma should be considered as a differential diagnosis when trying to remove retained spectacles from a reptile eye.

[Indexed for MEDLINE]

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