You betcha. In 1970 the surgical cut for the splenectomy was 7" long. The surgeon removed my appendix while he was at it.
Today, splenectomy would be a minimally invasive surgery.
As for the cost, a few bottles of prednisone are a fraction of the cost of IVIG.
I don’t know if IVIG is a permanent cure since the patient’s mother has ITP with ongoing IVIG treatments. My treatment worked…period. No problems in the last 45 years.
Wendy