Table 4.

Hao et al. modified staging system of DFSP

Stage	Criteria
I	Non-protuberant lesions, including atrophic or sclerotic plaque, macula, or small nodules
II	Protuberant primary tumor
IIA	Superficial tumor: without invasion of the underlying fascia
IIB	Deep tumor: infiltrating the fascia or occurring beneath the superficial fascia
III	Lymph node metastasis
IV	Distant metastasis to other organs