Review of dermatofibrosarcoma protuberans

Area of Science:

• Dermatology
• Oncology
• Pathology

Background:

• Dermatofibrosarcoma protuberans (DFSP) is an uncommon cutaneous sarcoma with a high local recurrence rate.
• A specific genetic fusion, t(17;22)(q22;q13), involving PDGFB and COL1A1, is found in over 90% of DFSP cases, driving oncogenesis.
• DFSP typically presents as a slow-growing, asymptomatic plaque or nodule on the trunk or limbs.

Purpose of the Study:

• To review the clinical features, histological subtypes, and management strategies for dermatofibrosarcoma protuberans (DFSP).
• To highlight the genetic underpinnings and cellular pathways involved in DFSP development.
• To discuss current and potential therapeutic approaches for DFSP.

Main Methods:

• Review of existing literature on dermatofibrosarcoma protuberans.
• Analysis of clinical presentation, histological findings, and genetic alterations.
• Evaluation of surgical and non-surgical management options.

Main Results:

• DFSP exhibits a high local recurrence rate (3.0 per million person-years in England, 2019) but a low metastatic rate and mortality.
• Key histological features include spindle cells in a storiform pattern with CD34 positivity.
• Mohs micrographic surgery is favored over wide local excision for localized tumors; imatinib is an option for advanced disease.

Conclusions:

• DFSP requires careful management due to its high recurrence potential.
• Understanding the PDGFB pathway is crucial for targeted therapies.
• Further research is needed to refine risk factor identification and standardize DFSP treatment protocols.