The American Society of Dermatopathology
Kara Melissa T. Torres, MD, DPDS; Dirk Elston, MD
Question 1:
A biopsy of an asymptomatic nodule on the cheek of a 55-year-old male shows the following histopathology (Figures 1-5) and immunohistochemical stains (Figures 6-9). Click image to view the virtual slide
iOS users: The Virtual Slide is not currently supported in the iOS environment. Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6. p63
Figure 7. BerEP4
Figure 8. SOX 10
Figure 9. Vimentin
Given the morphologic and immunohistochemical findings, what is the most appropriate diagnosis?
Basal cell carcinoma
Collision tumor - BCC/Melanoma
Collision tumor - BCC/Squamous cell carcinoma
Collision tumor - BCC/Metastatic carcinoma
Divergent differentiation - Melanocarcinoma