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Vascular hamartoma in a horse
A young horse showing lameness of a hind limb for more than 8 weeks: There are many very likely mainly orthopedic differentials that have to be considered. But in this case, an extremely rare and benign neoplasia in the subcutis is the reason for the problem. A very interesting case report from Iran!

A 5-year-old gelding was presented with lameness of one hind limb. On clinical examination a neoplasia in the subcutis of the affected limb was diagnosed which was present for more than 2 months.

Physical examination revealed normal vital signs.

Laboratory findings were within normal ranges. No bone abnormalities were detected on radiographic examination of the affected area.

Bloody fluid was obtained by aspiration. Through an I-shape skin incision the tumour was excised en-block.

Microscopic study showed a vascular hamartoma characterized by cavernous haemangiomatous tissue and proliferation of multiple vessels of variable diameter.

This report highlights the importance of limb vascular hamartoma, as an infrequent lesion, in the differential diagnosis of lameness in the horse.



Source: Saifzadeh, S., Derakhshanfar, A., Shokouhi, F., Hashemi, M & Mazaheri, R (2006)
Vascular Hamartoma as the Cause of Hind Limb Lameness in a Horse. In: Journal of Veterinary Medicine Series A 53 (4), 202-204.




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