Glomus tumor in the digit of a cat.
A solitary mass approximately 1.5 x 2 cm located on the outer side of the third digit of the left forepaw of a 7-year-old male cross-breed cat was examined pathologically. The excised tumor mass was hard and white and located within the deep dermis and subcutis. Histopathologically, the mass consisted of a mixed population of small round epithelioid cells arranged in ribbon- or cordlike structures and spindle-shaped cells forming loose irregular bundles in a mucinous stroma. The epithelioid cells were often arranged around small blood vessels. Neoplastic cells were intensely positive for vimentin and alpha smooth muscle actin and negative for keratin, desmin, S-100 protein, and neuron-specific enolase. Based on these pathologic features, the tumor was diagnosed as a glomus tumor, a neoplasm not previously reported in cats and extremely rare in animals.
Uchida
K
K
Department of Veterinary Pathology, Faculty of Agriculture, Miyazaki University, Japan. a0d423u@cc.miyazaki-u.ac.jp
Yamaguchi
R
R
Tateyama
S
S
D000818:Animals; D002371:Cat Diseases / Q000473:pathology* / Q000601:surgery; D002415:Cats; D005534:Foot Diseases / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D005552:Forelimb / Q000473:pathology* / Q000601:surgery; D005918:Glomus Tumor / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D007150:Immunohistochemistry / Q000662:veterinary; D008297:Male