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A congenital vascular naevus in a foal
Insights
A congenital vascular malformation, identified as a congenital vascular nevus, was observed in a colt
Area of Science:
- Veterinary Dermatology
- Equine Pathology
Background:
- Congenital vascular malformations can occur in animals.
- Vascular lesions in equine limbs require accurate diagnosis.
Purpose of the Study:
- To describe a case of congenital vascular malformation in a colt.
- To histologically characterize the lesion and determine its nature.
Main Methods:
- Clinical examination of the lesion on the colt's hind leg.
- Macroscopic and histological analysis of a biopsy.
- Differential diagnosis between hamartoma and true tumor.
Main Results:
- A skin lesion at the coronary border of the right hind leg was identified.
- Microscopic examination revealed closely-packed convoluted small vessels in the dermis.
- The lesion was characterized as an exaggeration of normal glomi.
Conclusions:
- The lesion was diagnosed as a congenital vascular nevus, a type of hamartoma.
- The foal is under observation to monitor the lesion's progression.
Abstract:
This paper describes a case of a congenital vascular malformation in the skin of a colt. The lesion arose at the coronary border of the right hind leg. The microscopic structure of a biopsy suggested that the lesion, consisting of multiple foci of closely-packed convoluted small vessels in the dermis, represented a marked exaggeration of glomi which normally occur in considerable numbers in this region of the skin. On the basis of the clinical, macroscopic and histological findings, this lesion was considered to be an hamartoma, rather than a true tumour, and was therefore termed a congenital vascular naevus. The foal is remaining under observation to determine the eventual outcome of the lesion.