Haemangioma

From Felipedia

Haemangiomas are benign vascular tumours, as opposed to their variant malignant counterpart, the haemangiosarcoma.

Several types of haemangiomas can be distinguished based on microscopical features.

Haemangioma can occur in any organ, such as the liver^[1], skin, uterus^[2] and blood vessels^[3]. The arteriovenous haemangioma is a rare variant of the haemangioma and has also been reported in the cat.

Haemangiomas comprise non-encapsulated proliferations of variably sized arterial- and venous-like vessels, accompanied by clusters of capillaries and immature vascular structures in cats.

References

1. ↑ Head KW, et al (2003) Histological Classification of Tumors of the Alimentary System of Domestic Animals. Second Series. X. WHO, Armed Forces Institute of Pathology; Washington, D.C.
2. ↑ Fukui K, Matsuda H. (1983) Uterine haemangioma in a cat. Vet Rec 113(16):375
3. ↑ Schöniger S, Tivers MS, Baines SJ, Summers BA (2008) Arteriovenous haemangioma in two dogs and a cat. J Comp Pathol 139(2-3):130-136