Aa. Renshaw et J. Rosai, BENIGN ATYPICAL VASCULAR-LESIONS OF THE LIP - A STUDY OF 12 CASES, The American journal of surgical pathology, 17(6), 1993, pp. 557-565
We present 12 cases of benign atypical vascular lesions of the lip wit
h cytologic or architectural features that raised microscopically the
possibility of angiosarcoma. The patterns encountered in these lesions
, sometimes in combination, were the following: lobular capillary hema
ngioma in five cases; intravascular papillary endothelial hyperplasia
in five cases; epithelioid hemangioma in four cases; and acquired prog
ressive lymphangioma in one case.