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ADVANCED DERMOSCOPY OF SKIN CANCER

This chapter is an advanced dermoscopy guide to the 3 most common skin cancers: basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma. The basic dermoscopic patterns of these skin cancers have been covered in Chapter 111 on dermoscopy (an overall introduction) and in the other chapters devoted to each skin cancer. This chapter provides further information and examples of dermoscopy for the various subtypes of these skin cancers.

BASAL CELL CARCINOMA (SUBTYPES)

BCCs have many recognizable dermoscopic features described in Table 111-2. They can be subdivided into pigmented and nonpigmented BCCs depending on the presence or absence of pigment clinically, dermoscopically, and histologically. See Chapter 177 (Basal Cell Carcinoma) for examples.

BCC is also subdivided into the following histologic categories, and each of these histologic types may present with different dermoscopic features:

  1. Superficial BCC (Figures 181-1, 181-2, 181-3)

  2. Nodular BCC (Figure 181-4)

  3. Morpheaform BCC (Figure 181-5)

  4. Sclerosing BCC (Figure 181-6)

  5. Infiltrative BCC (Figure 181-7)

FIGURE 181-1

Non-pigmented, superficial basal cell carcinoma displaying two small erosions and short fine telangiectasias. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-2

Pigmented superficial basal cell carcinoma presenting with leaflike areas and concentric structures. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-3

Nonpigmented, superficial basal cell carcinoma presenting only with shiny white blotches and strands. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-4

Nodular basal cell carcinoma displaying blue-gray ovoid nests, a short fine telangiectasia, and multiple in-focus, blue-gray dots. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-5

Morpheaform basal cell carcinoma on the cheek presenting with multiple arborizing vessels on a whitish background. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-6

Sclerosing basal cell carcinoma displaying blue-gray ovoid nests and multiple in-focus, blue-gray dots. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, MD.)

FIGURE 181-7

Infiltrative basal cell carcinoma presenting with multiple arborizing vessels on a whitish background. (Reproduced with permission from the International Skin Imaging Collaboration. Courtesy Harold Rabinovitz, ...

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