ENDOVASCULAR PAPILLARY ANGIOENDOTHELIOMA (DABSKA-TUMOR) IN AN ELDERLYWOMAN

A patient with endovascular papillary angioendothelioma with a low gra de of malignancy showing papillary proliferation of endothelioid cells is presented. The patient, an 83-year-old woman, underwent resection of a tumor of the neck. At operation a 9x7cm cystic tumor containing y ellow transparent liquid with clots was found in the subcutaneous tiss ue, Histological studies showed endothelioid cells with spindle-shaped nuclei proliferated in layers around the fibrovascular cores, which s howed the characteristic appearance of papillary proliferation. These cells were immunohistochemically positive for CD31, CD34 and factor VI II-related antigen. Based on these observations, the tumor was conside red to be an endovascular papillary angioendothelioma (Dabska tumor). Dabska tumor is a vascular tumor with a low grade of malignancy and us ually occurs in infants and young children. About 13 cases of Dabska t umor have been reported, The occurrence of a Dabska tumor in an aged p atient is considered to be rare.