웹Solar lentigo. Solar lentigines are benign lesions occurring on sun- exposed skin. Pathogenesis is related to repeated intermittent sun exposure and ultraviolet-induced mutations leading to enhanced melanin production and abnormal pigment retention by … Lichenoid keratosis is also known as benign lichenoid keratosis, solitary lichen … Melanoma in-situ. The term ‘ in situ ’ refers to a tumour which has not breeched the … What is lentigo simplex?. Lentigo simplex is the most common form of lentigo.A … 웹2024년 7월 23일 · Typical morphology of solar lentigines enunciates an elongation of rete ridges with focally intense, basal hyperpigmentation. Solar elastosis is a constant feature. Spots of solar lentigines with hyper-pigmentation of basal layer and accompanying elongation of epidermal rete ridges also depict a compact, superimposed epidermis with …
Pathology Outlines - Hyperpigmentation
웹2016년 9월 29일 · The pigmentation process has been extensively described in many other documents [] so will not be discussed in detail here.Briefly, melanocytes are specialized dendritic cells interspersed amongst basal keratinocytes and serve the primary function of producing melanin in intracellular organelles called melanosomes that are then distributed … 웹2024년 3월 1일 · Basal keratinocyte hyperpigmentation, scattered melanophages in the superficial perivascular distribution, and a collection of eosinophilic homogenous amyloid granules within the papillary dermis (B, Hematoxylin-eosin stain; original magnifications: ×200, arrowhead), which are highlighted by pan-cytokeratin staining (C, Hematoxylin-eosin stain; … maradona sogno benedetto wikipedia
KoreaMed Synapse
웹2002년 2월 1일 · Melasma is a common acquired symmetrical hypermelanosis characterized by irregular light to dark brown macules and patches on sun‐exposed areas of the skin. Although no sex, race or age is exempt from developing melasma, it is more common in Oriental or Hispanic women living in sunny locations. 1 Its aetiological factors are genetic … 웹2013년 2월 1일 · P pigmented epidermal equivalents generated from ORS cells offer practical advantages over other in vitro pigmentation models: (1) the OrS cells are easily and repeatedly available from any donor regardless of age; (2) primary cultures of ORS Cells are free of contaminating melanocytes, a bias if using interfollicular epidermis keratinocytes; … 웹2024년 6월 12일 · In skin epidermis, keratinocytes secrete factors transduced by melanocytes into signaling cues promoting their pigmentation and dendrite outgrowth, … maradona valentino rossi