Lentigo: Causes, Features, and Treatment — DermNet
A lentigo is a pigmented flat or slightly raised lesion with a clearly defined edge. Unlike an ephelis(freckle), it does not fade in the winter months. There are several kinds of lentigo. The name lentigo originally referred to its appearance resembling a small lentil. The plural of lentigo is lentigines, although “lentigos” is also … 展开
Lentigines can affect males and females of all ages and races. Solar lentigines are especially prevalentin fair skinned adults. Lentigines associated with syndromes are present at birth or arise during childhood. 展开
Common forms of lentigo are due to exposure to ultraviolet radiation: 1. Sun damage including sunburn 2. Indoor tanning 3. Phototherapy, especially photochemotherapy (PUVA). Ionising radiation, eg radiation therapy, can also cause lentigines. Several … 展开
Lentigines have been classified into several different types depending on what they look like, where they appear on the body, causative factors, … 展开
Lentigines are usually diagnosed clinically by their typical appearance. Concern regarding possibility of melanomamay lead to: 1. Dermatoscopy 2. Diagnostic excision biopsy Histopathologyof a lentigo shows: 1. Thickened epidermis 2. An increased number of melanocytes … 展开
Labial melanotic macule - DermNet
2023年10月26日 · It is also sometimes called a labial lentigo and when multiple lesions are present, mucosal melanosis. What are the clinical features of labial melanotic freckle? Usually solitary, a labial melanotic macule is most …
Seborrheic Keratosis / Lentigos - dermoscopedia
2023年3月25日 · Clinically, early seborrheic keratoses are light to dark brown oval macules with sharply demarcated borders (solar lentigo). As the lesions progress, they transform into …
Pathology Outlines - Lentigo
2024年12月10日 · Macular or evolving seborrheic keratoses can be clinically difficult to distinguish from solar lentigo Ephelides: Normal number of melanocytes with pigmentation due to …
Pigmentation Disorders: Diagnosis and Management
2017年12月15日 · Solar lentigines (liver spots) are macular, 1- to 3-cm, hyperpigmented, well-circumscribed lesions on sun-exposed surfaces of the skin. They vary from light yellow to dark brown and...
Solar lentigines / seborrheic keratoses / lichen planus-like …
2018年7月25日 · Solar lentigo. Solar lentigines are sharply circumscribed, uniformly pigmented macules that are located predominantly on the sun-exposed areas of the skin, such as the …
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Lentigo pathology - DermNet
In some cases there is morphologic overlap with macular seborrhoeic keratoses. Basal layer hyperpigmentation may be marked. There is often a mild increase in the numbers of melanocytes, particularly at the tips of elongated rete ridges.
Lentigo - an overview | ScienceDirect Topics
In adults, seborrheic keratosis and lentigo maligna are included in the differential diagnosis. The most important of these is lentigo maligna, which appears as an irregularly colored (varying …
Key points in dermoscopic differentiation between lentigo
Diagnostic key points for lentigo maligna/lentigo maligna melanoma on dermoscopy are asymmetrical pigmented follicular openings, rhomboidal structures, annular-granular structures …
Lentigo - The Skin Cancer Doctor
Lentigo are benign pigmented macules that result from increased activity of epidermal melanocytes. Lentigo like lesion can be benign or malignant, hence it is important to rule out …
