Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] · 2004
Dermoscopy of subcorneal hematoma.
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Zalaudek Iris, Argenziano Giuseppe, Soyer H Peter, Saurat Jean-Hilaire, Braun Ralph P
Аннотация
BACKGROUND: Subcorneal hematoma is a pigmented skin lesion usually occurring on palms or soles after a trauma or sport activity. Clinically, it may exhibit overlapping features with acral melanoma or acral melanocytic nevi, leading to unnecessary excision of this otherwise harmless skin lesion.
OBJECTIVE: The objective was to describe the dermoscopic features in a series of subcorneal hematomas.
METHODS: Dermoscopic images of 15 subcorneal hematomas were evaluated for the presence of different colors and dermoscopic structures.
RESULTS: In our series, a red-black hue was the most frequent color seen by dermoscopy (40% of the lesions) and a homogeneous pattern of pigmentation was the most frequent dermoscopic structure (53.3%). Remarkably, 40% of the lesions exhibited a parallel-ridge pattern that is usually found in early melanoma of palms and soles. In 46.7% of the lesions, red-black globules were additionally seen at the periphery as satellites disconnected from the lesion's body. Only two lesions showed either parallel-furrow or fibrillar pattern. A scratch test performed in four lesions, allowed complete or partial removal of the pigmentation.
CONCLUSION: Dermoscopic features of subcorneal hematomas may be similar to those observed in acral melanocytic lesions. Nevertheless, in most cases the correct diagnosis can be facilitated by the presence of a red-black homogeneous pigmentation, often combined with satellite globules. A positive scratch test may be considered as an additional diagnostic clue.
OBJECTIVE: The objective was to describe the dermoscopic features in a series of subcorneal hematomas.
METHODS: Dermoscopic images of 15 subcorneal hematomas were evaluated for the presence of different colors and dermoscopic structures.
RESULTS: In our series, a red-black hue was the most frequent color seen by dermoscopy (40% of the lesions) and a homogeneous pattern of pigmentation was the most frequent dermoscopic structure (53.3%). Remarkably, 40% of the lesions exhibited a parallel-ridge pattern that is usually found in early melanoma of palms and soles. In 46.7% of the lesions, red-black globules were additionally seen at the periphery as satellites disconnected from the lesion's body. Only two lesions showed either parallel-furrow or fibrillar pattern. A scratch test performed in four lesions, allowed complete or partial removal of the pigmentation.
CONCLUSION: Dermoscopic features of subcorneal hematomas may be similar to those observed in acral melanocytic lesions. Nevertheless, in most cases the correct diagnosis can be facilitated by the presence of a red-black homogeneous pigmentation, often combined with satellite globules. A positive scratch test may be considered as an additional diagnostic clue.