A pink papule on the back of an 82-year-old man: an example of the buttonhole sign on reflectance confocal microscopy

Melanoma and satellite blue papule

The colors that are seen in dermoscopy depend on the anatomic level of the skin at which the chromophores are seen. Blue color can be found in a variety of melanocytic and nonmelanocytic lesions. An 89-year-old man presented with a 3-year history of a slow-growing, hyperpigmented patch located on the distal third of the right arm. Dermoscopy showed an atypical network, irregularly distributed g...

An asymptomatic erythematous scaly plaque on the left lower back

A 61-year-old man was referred to our dermatology departmentfor the evaluation of a single asymptomatic plaque on hisleft lower back that has been present for one year. The lesionbegan as an erythematous scaly plaque that

A pink papule on the forehead of a young woman

Acquired hyperpigmented lesion on the foot

case: A 3.5-year-old girl presented with a 1-year history of a slow growing pigmented lesion on the dorsal aspect of her right foot. Physical examination revealed the presence of a pigmented patch with color distribution from pink to tan to dark brown, relatively well circumscribed and approximately 1.5 × 2cm with irregular borders, and especially a single dark central papule superimposed...

A 28-year-old man with an asymptomatic firm plaque on his right shin: what is your diagnosis?

CLINICAL PRESENTATION A 28-year-old man referred to the dermatology clinic with an asymptomatic firm, well demarcated violaceous plaque with bumpy surface on his right medial upper shin since two years ago. At first, the lesion was an erythematous patch and gradually became like a plaque. He had pain and sensation of heaviness in his leg (Figure 1). He had no other skin lesions and was otherwis...