Risk stratification in extramammary Paget disease

Area of Science:

• Oncology
• Dermatology

Background:

• Extramammary Paget disease (EMPD) is a rare intraepithelial adenocarcinoma affecting apocrine gland-rich areas.
• Risk stratification and treatment planning for EMPD present clinical challenges.

Purpose of the Study:

• To review prognostic factors for Extramammary Paget disease (EMPD).
• To assist physicians in risk stratifying EMPD patients.

Main Methods:

• Review of existing literature on Extramammary Paget disease (EMPD) prognostic indicators.
• Analysis of data on depth of invasion, extracutaneous involvement, and tumor genetics (Ki-67, cyclin D1, Mucin 5AC, E-cadherin).

Main Results:

• Tumor invasion into the reticular dermis or depth > 1 mm indicates poorer prognosis.
• Extracutaneous spread (lymph nodes, other tissues) signifies higher risk.
• Tumor genetics show emerging importance, while lesion site and patient age have less evidence.

Conclusions:

• Depth of invasion and extracutaneous involvement are key prognostic factors in EMPD.
• Tumor genetics are increasingly recognized for their role in EMPD risk stratification.
• This review provides valuable information for clinical practice and EMPD research.