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Glomus tumor in a dog

K Shinya¹, K Uchida, K Nomura

¹Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Japan.

The Journal of Veterinary Medical Science

|November 15, 1997

Summary

This study reports the first canine glomus tumor case in a dog. The skin mass showed characteristic epithelioid cells, confirming this rare tumor in veterinary oncology.

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Area of Science:

Veterinary Pathology
Canine Oncology
Surgical Pathology

Background:

Glomus tumors are rare neoplasms typically arising in the extremities.
These tumors originate from glomus bodies, which are involved in thermoregulation.
Canine glomus tumors are exceptionally uncommon, with limited documented cases.

Observation:

A glomus tumor was identified on the right foreleg of a 10-year-old male mongrel dog.
Histological examination revealed vasculatures and epithelioid tumor cell proliferation.
Tumor cells exhibited round to ovoid nuclei and eosinophilic cytoplasm, some rimming blood vessels.

Findings:

Immunohistochemistry confirmed the presence of smooth muscle actin and vimentin in tumor cells.
Electron microscopy revealed actin-like filaments with dense bodies within the tumor cell cytoplasm.
These findings are consistent with a glomus tumor diagnosis in a canine patient.

Implications:

This case represents the first documented instance of a glomus tumor in a dog.
It expands the differential diagnosis for cutaneous masses in canine oncology.
Further research may elucidate the specific characteristics and behavior of glomus tumors in dogs.

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