Typical Clinical PresentationSK more commonly present as multiple,pigmented,sharply demarcated lesions. They may present as macules,papules or even plaques,depending on their stage of development.Fig 3.1 Seborrheic keratosis(the early stage)Fig 3.2 Sebo...[继续阅读]

    Typical Clinical Features(1)More common in the elderly. The trunk and flexor aspects of limbs are preferred sites.(2)Typical lesions present as tight dome-shaped blisters with serous fluid on normal or erythematous skin. The walls of blisters are thick an...[继续阅读]

    Typical Clinical Features(1)Lesions are usually distributed along the lines of Blaschko.(2)Progressive skin thickening which is well-demarcated can be also presented as single,round or oval,skin-colored to yellowish papules and plaques.(3)Smooth,granular ...[继续阅读]

    Typical Clinical Features(1)Lesion often presents as a shiny,pearly papule or nodule,ulceration with elevated rolled borders in the center.Fig 3.27 Ulcerative basal cell carcinomaFig 3.28 Nodular basal cell carcinomaFig 3.29 Pigmented basal cell carcin...[继续阅读]

    Typical Clinical Presentation(1)Most commonly located on the face,dorsal hands and forearm.(2)Lesions are skin-colored or light brown with a smooth or rough surface,slightly elevated and flat-topped,millet to bean sized papules.(3)Diffuse distribution or ...[继续阅读]

    Typical Clinical Presentation(1)Most commonly found on the external genitalia,perineum and perianal area.(2)Lesions are pinkish hyperkeratotic,exophytic papules in the beginning,and then grow into red or brown,pedunculated or broad-based papillomatous pla...[继续阅读]

    Typical Clinical Presentation(1)Commonly occur on the interdigital webbing of the hands,the flexural aspects of the wrists,the lower abdomen,the external genitalia and the inner aspects of thighs.(2)Lesions are pinpoint-sized papules,papulovesicles and ve...[继续阅读]

    Typical Clinical Features(1)Solitary,bright red or red-brown papule or nodule,can be pedunculated.(2)Smooth or verrucous surface,often with superficial ulcer and crusting.(3)Often bleeding profusely after minor trauma.Fig 3.47 Pyogenic granulomaTypical P...[继续阅读]

    Typical Clinical Features(1)Typically occurs on fingers,toes and soles or in and around the nail apparatus.Fig 3.50 Acral melanoma(finger involvement)Fig 3.51 Acral melanoma(lesion on the lateral margin of foot)(2)Asymmetric,brown to black macule with c...[继续阅读]

    Typical Clinical Presentation(1)Commonly occur on the inner aspects of the upper thighs,unilateral or bilateral.(2)Lesions are annular or semicircular patches sharply demarcated with an erythematous scaly advancing border. This border may contain small pa...[继续阅读]