unicentric

adjective

uni·​cen·​tric ˌyü-ni-ˈsen-trik 

: having a single center of origin

a unicentric tumor

For example, a pathologic analysis of 130 mastectomy specimens with primary tumors 2 cm or smaller found that only 41% had pathologically confirmed unicentric disease. A total of 42% of patients had multifocal or multicentric disease …

—Grace L. Smith et al., The Journal of the American Medical Association