# Case Report: Computed tomography-guided diagnosis and surgical removal of intraorbital salivary choristoma confirmed with cytology and histopathology

## TL;DR

A Golden Retriever had a rare intraorbital salivary choristoma diagnosed using CT scans, cytology, and surgery.

## Contribution

This case report confirms a rare diagnosis of salivary choristoma in a dog using combined diagnostic methods.

## Key findings

- Computed tomography revealed a fluid-filled intraorbital mass not linked to salivary or lacrimal glands.
- Cytology suggested a mildly inflamed salivary lesion, while histopathology confirmed salivary gland tissue in a cyst.
- The diagnosis of salivary choristoma was supported by 3D imaging and histopathology.

## Abstract

A 10-year-old male castrated Golden Retriever was presented for evaluation of a 2-year history of a slowly progressing intraorbital mass. Computed tomography showed a large, ovoid, fluid-filled structure that was not clearly associated with the salivary or lacrimal glands. Cytology was most consistent with a mildly inflamed salivary lesion. Surgical removal with biopsy showed that the mass was a cyst-like structure with multifocal serous salivary gland tissue. Histopathologic diagnosis, combined with three-dimensional imaging confirmation of an abnormal anatomic location, is most consistent with salivary choristoma.