CD4 and Kaposi's sarcoma: CD4 counts at diagnosis were lower for KS cases (median: 69 cells/mm3; IQR: 34–227) and NHL cases (median: 153 cells/mm3; IQR: 89–263), but were more similar to the entire patient population for other cancer cases (median: 370 cells/mm3; IQR: 159–582).