There are several systems designed to stage KS, but none is entirely satisfactory or accepted by all physicians. A representative system designed at New York University divides patients into four groups:
1. Skin lesions, locally indolent (slow growing).
2. Skin lesions, locally aggressive, with or without local lymph node involvement.
3. Skin and mucous membrane involvement, generalized, with or without lymph node involvement.
4. Deep organ involvement.
All stages are then divided into either A (no symptoms) or B (with weight loss or fever).
