The Southwest Oncology Group (SWOG) developed a staging system for histiocytosis X in 1981.
Parameters:
(1) age of the patient in years
(2) organ dysfunction (hepatic, hematopoietic, pulmonary) of Lahey
Age
Organ Dysfunction
Risk Group
>= 2
none
good
< 2
intermediate
any age
one or more present
poor
()
5 year survival rate in 1981
90%
66%
46%
after Figure 1, page 799, Komp 1981
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Purpose: To identify the risk group for a patient with histiocytosis X using the Southwest Oncology Group (SWOG) staging system.
Specialty: Hematology Oncology
Objective: severity, prognosis, stage
ICD-10: C96.5, C96.6,
