Immunophenotypic characterization of mixed type gingival vascular Immunophenotypic characterization of mixed type gingival vascular hamartoma in a calf - a case report hamartoma in a calf - a case report

A one month-old heifer calf affected by gingival vascular hamartoma, of measured mass 3×2.5×2 cm is presented. This gingival vascular hamartoma was a mixture of redundant vessels ranging from capillaries or capillary buds and large arteries separated by edematous and loose fi brostroma. The results of Immunohistochemistry showed strong expression of the alpha smooth muscle Actin, weak reaction of the Von Willebrand factor and negative reaction of Vimentin, CD31, Ki67 and PCNA in endothelial cells, suggesting vascular hamartoma.