Repeated surgical treatment and long-term outcome of a cat with vertebral          vascular hamartoma

Ito, Daisuke; Shiozawa, N; Sekiguchi, N; Ishikawa, Chieko; Jeffery, Nick; Kitagawa, Masato

doi:10.1292/jvms.19-0079

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…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.…”

Section: Discussionsupporting

confidence: 81%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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Spinal epidural arteriovenous fistula in 3 cats

Yayoshi

Yoshida

Terao

et al. 2022

Veterinary Internal Medicne

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Three young adult cats with intermittent spinal hyperesthesia and paraparesis and diagnosed with spinal epidural arteriovenous fistula are described. In all 3 cases, magnetic resonance imaging (MRI) showed focal dilatation of the veins in the epidural space of the thoracic spinal cord, whereas computed tomography angiography (CTA) showed dilatation and enhancement from the intercostal vein to the azygos vein at the same site in the arterial phase. Dorsal laminectomy and occlusion of the interarcuate branches running across the dorsal aspect of the spinal cord were performed in all 3 cats to decompress the spinal cord, which resulted in a remission of clinical signs and no recurrence during 14 to 40 months of follow-up after surgery in all cases.

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Section: Discussionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Spinal epidural arteriovenous fistula in 3 cats

Yayoshi

Yoshida

Terao

et al. 2022

Veterinary Internal Medicne

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“…They can arise in various organs and are considered lesions halfway between a vascular malformation and a neoplasm. In cats vascular hamartomas have been reported in the central nervous system ( 3 , 4 ), nasal cavity ( 5 ), vertebral canal ( 6 , 7 ), gingiva ( 8 ), and mandible ( 9 ). In veterinary medicine, hepatic vascular hamartomas have also been described in three dogs ( 10–12 ) and one case in a cow ( 13 ).…”

Section: Introductionmentioning

confidence: 99%

Hepatic vascular hamartoma in a cat: a case report with literature review

Negoescu,

Gal,

Bărbulescu

et al. 2024

Front. Vet. Sci.

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Vascular hamartomas represent a focal proliferation of disorganized vascular tissue, which is usually present at birth. An 8-month-old Scottish fold female cat presented with abdominal distention, mild dyspnea, pale mucous membranes, and lethargy. Ultrasound examination revealed a hepatic mass resembling multiple cysts affecting the right medial lobe. Surgical excision was performed, and tissue samples were sent for histopathological evaluation. The mass was composed of multiple, dilated, variably-sized well-differentiated arterioles and venules, consistent with vascular hamartoma. Immunohistochemical investigation of the cells lining the cystic structures showed positive immunolabeling for vimentin and negative immunolabeling for PanCK, supporting the histological diagnosis. Based on existing literature, this represents the first case of hepatic localization of vascular hamartoma in a cat. In addition, a comparative histological study between vascular hamartoma and biliary duct hamartoma and a review on hepatic vascular hamartomas in animals and hepatic cystic masses in cats was made.

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Retrospective study of partial lateral corpectomy to treat thoracic and lumbar intervertebral disc herniation in 12 cats

Tyroller,

Wennemuth,

Forterre

et al. 2024

Journal of Feline Medicine and Surgery

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Objectives The aim of this study was to describe the safety and effectiveness of thoracic or lumbar partial lateral corpectomy (PLC) in cats with spinal cord compression due to intervertebral disc herniation (IVH). Methods A retrospective study was conducted of 12 client-owned cats from two academic and one private referral veterinary centres. Cross-sectional imaging was available in 12 cats for evaluation of disc herniation. Nine cats had postoperative imaging for evaluation of slot creation and decompression. Neurological examination was performed for assessment of pre- and postoperative status. Complications were evaluated. Results Seven cats had severe (>50%), four moderate (>20 to <50%) and one mild (<20%) spinal cord compression on cross-sectional imaging. IVH occurred at Th12–13 in five cases, at L1–2 in two cases and at Th3–4, Th13–L1, L4–5 and L5–6 in one case each. After PLC, two cats had insufficient decompression (>20% remaining spinal cord compression), five had good decompression (<20% remaining spinal cord compression) and complete decompression (normal shape of the spinal cord) was achieved in two cats. Outcomes included five cats with an excellent result, three with significant improvement, one with mild improvement and three cats that died intra- or postoperatively due to extensive intraoperative bleeding. One cat was euthanased as a result of neurological deterioration 5 months postoperatively. The median follow-up period was 13.2 months (range 0 days to 84 months). Conclusions and relevance PLC in cats offers a potential treatment option for IVH to decompress the spinal cord. Fatal haemorrhage associated with this surgery is a significant risk, as occurred in 25% of the cats in this study. Surgeons should especially be aware of the potential for intraoperative haemorrhage and the need for sufficient slot creation to achieve sufficient spinal cord decompression and avoid complications.

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Repeated surgical treatment and long-term outcome of a cat with vertebral vascular hamartoma

Cited by 3 publications

References 12 publications

Spinal epidural arteriovenous fistula in 3 cats

Spinal epidural arteriovenous fistula in 3 cats

Hepatic vascular hamartoma in a cat: a case report with literature review

Retrospective study of partial lateral corpectomy to treat thoracic and lumbar intervertebral disc herniation in 12 cats

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