useful histopathologic criteria for the recognition and diagnosis of oral kaposi 's sarcoma include ( 1 ) atypical vascular channels ( especially in early lesions ) , ( 2 ) a prominent spindle cell component in later lesions , ( 3 ) extravasated red blood cells , ( 4 ) hemosiderin , ( 5 ) the presence of eosinophilic bodies , ( 6 ) chronic inflammatory cells in early lesions , and ( 7 ) mitotic figures in tumor-stage lesions .
C0153562
oral kaposi 's sarcoma
C0005847
vascular