Spreading pigmented actinic keratosis: A review

What's new in dermoscopy of Bowen's disease: two new dermoscopic signs and its differential diagnosis

“…In order to facilitate the differentiation from other skin diseases, we summarized the dermoscopic differential diagnosis of BD in Table 2, including SK, BCC, AK, MM, LPLK, MPD, and LMM. 12,[14][15][16][17][18] In conclusion, BD is an in situ epithelial carcinoma showing various clinical manifestations and dermoscopic features. This study involved a larger number of cases including both pigmented and nonpigmented BD, systematically analyzed the dermoscopic features of BD, and proposed two new dermoscopic findings relatively specific for BD.…”

“…Since BD shares some dermoscopic features with SK, BCC, etc., it is hard to define a dermoscopic algorithm for BD. In order to facilitate the differentiation from other skin diseases, we summarized the dermoscopic differential diagnosis of BD in Table , including SK, BCC, AK, MM, LPLK, MPD, and LMM …”

Letter: Pigmented Bowen's Disease: A Report of Two Cases

“…If malignant melanoma cannot be excluded on clinical and dermatoscopic examination, the use of specific markers can be useful. The melanocytic markers S‐100 protein, HMB45, and MART‐1/Melan‐A have been shown to be useful in differentiating between keratinocytic or melanocytic malignancies such as lentigo maligna, pigmented solar keratoses, PBD, and pigmented squamous cell carcinoma 4 . In our cases of PBD, keratinocytic neoplastic cells stained positive for cytokeratin, high‐ and low‐molecular‐weight keratin, or epithelial membrane antigen 5…”

Non‐melanocytic mimics of melanocytic neoplasms

“…Cutaneous epithelial tumours ( Table 2) [4][5][6][7][8][9][10][11][12][13][14][15][16] may mimic melanocytic tumours because of (i) the presence of abundant melanocytes and ⁄ or melanin, (ii) the intraepidermal pagetoid pattern of primary and metastatic tumours or (iii) the presence of pseudo-nests within the epidermis.…”