Malignant Fibrous Histiocytoma Prognosis - Medical Algorithm

Description

Salo et al developed a staging system for malignant fibrous histiocytomas (MFH) involving an extremity. This can help identify a patient who may require more aggressive management. The authors are from Loma Linda University and Memorial Sloan-Kettering Cancer Center.

Parameters:

(1) histologic grade

(2) diameter in centimeters

(3) location

Grade	Diameter	Location	Stage
low	<= 5 cm	superficial	Stage I
low	<= 5 cm	deep	Stage I
low	> 5 cm	superficial	Stage I
low	> 5 cm	deep	Stage II
high	<= 5 cm	superficial	Stage II
high	<= 5 cm	deep	Stage II
high	> 5 cm	superficial	Stage II
high	5.01 - 10 cm	deep	Stage IIIa
high	> 10 cm	deep	Stage IIIb

where:

• A superficial location is superficial to the muscular fascia. A deep location involved the muscular fascia or was deep to it.

• A low grade tumor is AJCC histologic grade G1 or G2; a high grade tumor is AJCC histologic grade G3 or G4.

Stage	Mean Probability of 10 Year Disease Specific Survival
I	100%
II	79%
IIIa	48%
IIIb	31%

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Description

Specialty

Objective

ICD-10

Prognostic Staging System of Salo et al for a Malignant Fibrous Histiocytoma of an Extremity

Purpose: To evaluate a patient with a malignant fibrous histiocytoma arising in an extremity using the staging system of Salo et al.

Description

Specialty

Objective

ICD-10