The relationship between angioblastoma (Nakagawa) and tufted angioma: report of four cases with angioblastoma and a literature-based comparison of the two conditions.

We report four recent cases of angioblastoma (Nakagawa). Histopathologic examinations of all cases revealed dispersed islets of clear marginal lobules of varying sizes in the dermis. Neoplastic endothelioid cells with moderate atypia and enlarged capillaries containing erythrocytes were found in the conglomerates. Recently, the features of this disease have been compared to the tufted angioma that has been reported in Europe and the U.S. Our evaluation suggests that these two diseases are very likely the same. We suggest that this disease should be called "angioblastoma" in agreement with the first report of this disease by Nakagawa.