<prompt> Kaposis sarcoma is seen with -HCVHPVHSVHHV  <response>: Kaposi sarcoma KS is a vascular neoplasm caused by Kaposi sarcoma herpesvirus KSHV, also known as human herpesvirus- 8, or HHV-8. Although it occurs in a number of contexts, it is by far most common in patients with AIDS; indeed, its presence is used as a criterion for the diagnosis. Robbins basic pathology,9th edition,pg no.553 