In contrast to malignant histiocytosis, VAHS is usually a benign self-limiting illness, in which histiocytic proliferation is reversible.

• 比起恶性的血球吞嗜症候群；病毒并发的血球吞嗜症候群通常是良性；有自限性的疾病；而此种组织增生是可以回复的.