Vertebral angiomatosis recurrence in a 14‐month‐old Maine Coon cat

Abstract

Vertebral angiomatosis in cats is a rare locally aggressive benign tumor-like lesion that has been reported to have a good prognosis if surgically treated. This case reports a 14-month-old Maine Coon cat, who had a successful surgery for vertebral angiomatosis at the age of seven months, and represented with hindlimb ambulatory paraparesis seven months after the surgery. The CT scan confirmed the recurrence of vertebral angiomatosis, seven months postsurgery, showing more aggressive characteristics than the initial lesion and a poorer prognosis.

Spinal epidural arteriovenous fistula in 3 cats

“…Interestingly, vertebral angiomatosis and vertebral vascular hamartoma in cats previously reported as vertebral vascular malformations also occurred most commonly in the thoracic area at 1 to 2 years of age, 2‐14 which corresponds to the young adult, similar to the age of our cats. Although they were histologically characterized as benign vascular and bony proliferations and the condition was distinct from spinal AVM, spinal vascular malformations in cats may tend to occur in the thoracic vertebral column.…”

“…In humans, spinal arteriovenous malformations (AVMs) are rare conditions defined as a heterogeneous group of spinal vascular malformations characterized by an abnormal tangle of blood vessels in or around the spinal cord 1 . Cases of vertebral vascular malformations, such as angiomatosis and hamartomas, have been reported sporadically in cats 2‐14 . However, spinal AVMs have not been reported in cats.…”

Successful long-term outcome with radiation and prednisolone following a postoperative feline vertebral angiomatosis relapse

“…Five of six cats were treated with surgery alone, which consisted of hemilaminectomy or laminectomy, depending on the location of the abnormal bone. 2 – 5 One cat was euthanased after failing to recover from a cardiac arrest suffered during recovery from anaesthesia. 3 Two cats had an excellent long-term outcome at 1 and 1.5 years, respectively, with full recovery and a normal gait.…”

“…This cat underwent a second decompressive surgery but did not regain ambulation and was euthanased 14 months after the initial diagnosis. 5 Those case reports suggest that decompressive surgery alone may offer a good long-term prognosis, although relapses are possible. Additionally, relapses may not respond well to repeat surgeries, although more cases are needed to evaluate repeat surgeries as a treatment of vertebral angiomatosis relapses.…”

Canine disseminated peritoneal angiomatosis with arterial differentiation in a 10‐month‐old Rhodesian Ridgeback

“…1 Angiomatosis is considered to be a nonneoplastic, developmental or congenital malformation affecting blood vessels resulting in multiple tumour-like lesions. In the veterinary literature, angiomatosis has a vast array of presentations and has been reported to affect the skin, 2-5 central nervous system, 6 skeletal muscle, 7 vertebrae [8][9][10][11][12] and gastrointestinal tract. 13 To the authors' knowledge, this is the first case of disseminated peritoneal angiomatosis with arterial differentiation in the dog.…”