- Requiring 2 units of blood > once a month. Active opportunistic infection. Symptomatic visceral Kaposi's sarcoma (KS), progression of KS within 1 month of entry, or concurrent neoplasms other than KS. Basal cell carcinoma of the skin or in situ carcinoma of the cervix. Hemorrhagic diseases such as hemophilia A or B or von Willebrand disease.