Lentigo Maligna Melanoma With Folliculotropism: Dermoscopic Features During Rapid Progression

Reflectance confocal microscopy correlates of dermoscopic patterns of facial lesions help to discriminate lentigo maligna from pigmented nonmelanocytic macules

“…Pseudonetwork and annular granular structures were the most frequent dermoscopic patterns among pigmented lesions of the face, irrespective of their benign or malignant nature. In our study, blue pseudonetwork (also called ‘rhomboidal structure’), black pseudonetwork and blue and/or black blotches were almost exclusively seen in LMs/LMMs, supporting the data from previous studies . However, these patterns are usually observed in the advanced stages of lesion progression, whereas early lesions are mostly characterized by a brown pseudonetwork and grey or brown dots that form the annular granular pattern, which is usually also a characteristic of NMSN.…”

“…17 However, these patterns are usually observed in the advanced stages of lesion progression, 2 whereas early lesions are mostly characterized by a brown pseudonetwork and grey or brown dots that form the annular granular pattern, 18,19 which is usually also a characteristic of NMSN. In our study, blue pseudonetwork (also called 'rhomboidal structure'), black pseudonetwork and blue and/or black blotches were almost exclusively seen in LMs/LMMs, supporting the data from previous studies.…”

“…In our study, blue pseudonetwork (also called 'rhomboidal structure'), black pseudonetwork and blue and/or black blotches were almost exclusively seen in LMs/LMMs, supporting the data from previous studies. 17 However, these patterns are usually observed in the advanced stages of lesion progression, 2 whereas early lesions are mostly characterized by a brown pseudonetwork and grey or brown dots that form the annular granular pattern, 18,19 which is usually also a characteristic of NMSN. Thus, the differential diagnosis derived from an early LM and an SL, or early SK, or LPLK may prove to be particularly challenging in some cases.…”