case_images: PMC10423580_01
case_images: Large scaly erythematous plaque on the right breast.
case_images: CCID-16-2113-g0001.jpg
case_images: PMC10423580_01_CCID-16-2113-g0001.jpg
case_images: f0001
case_images: An irregular asymptomatic plaque with a size of 5 cm x 5 cm was seen on the right breast (Figure 1).
case_images: Histological pathogenesis of the resected specimen. (A) H&E staining. (B) Immunohistochemical staining of cytokeratin 7, (C) cytokeratin 20, and (D) Ki67. Scale bar: 100 mum.
case_images: CCID-16-2113-g0002.jpg
case_images: PMC10423580_01_CCID-16-2113-g0002.jpg
case_images: f0002
case_images: Histopathological examination showed hyperkeratosis, parakeratosis, and epidermal pustules (Figure 2A). Immunohistochemical staining indicated negativity for cytokeratin 7 (Figure 2B) and cytokeratin 20 (Figure 2C), and positivity for Ki67 (60%) (Figure 2D).