Hemangiopericytoma in a female dog with direct invasion of abdominal cavity and pulmonary metastasis

Abstract

An intact adult female Poodle dog was presented with a history of an increase in volume in the left and right mammary inguinal glands. The histopathological examination revealed a proliferation of spindle cells arranged in bundles with

Metastatic intraocular hemangiopericytoma in a dog

“…This type of tumor was first described by Stout and Murray (1942). Since the initial manuscript there have been numerous reports documenting this tumor in humans and various veterinary species (Mulligan, 1955;Enzinger and Smith, 1976;Richardson et al, 1983;Boniuk et al, 1985;Fossum et al, 1988;Graves et al, 1988;Mitarai et al, 1998;Beltran et al, 2001;McCaw et al, 2001;Serena et al, 2006;Silva et al, 2014). Most commonly, hemangiopericytoma is reported in dogs, of which it accounts for around 3-4% of all cutaneous neoplasia (Graves et al, 1988).…”

“…A statistically significant difference has not been shown between simple excision, excision with orthovoltage radiation, and excision with subsequent photodynamic therapy (Graves et al, 1988;McCaw et al, 2001). Seven previous canine cases have been recognized to have metastasized, and of those the lungs and lymph nodes were sites of spread (Handharyani et al, 1999;Silva et al, 2014). In humans, the rate of metastasis has been reported to be as high as 50%, with spread to the lungs, liver, and bones occurring most frequently (Johnson, 1976).…”