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. 2024 Jul 25;16(7):e65378. doi: 10.7759/cureus.65378

Figure 2. Pathogenesis of MPD.

Figure 2

(A) Epidermotropic theory: Paget cells originate in the underlying adenocarcinoma, and neoplastic epithelial cells migrate through the ductal system of the breast to reach the nipple epidermis. (B) Intraepidermal transformation theory: Paget cells originate through degeneration or in situ transformation of epidermal keratinocytes in the nipple-areola complex.

MPD: mammary Paget’s disease

Image made using biorender.com

Image Credit: Humza F. Siddiqui