No abstract available.
Lentigo*

No abstract available.
Lentigo* ; Ustekinumab*

Agminated lentigines may be defind as a circumscribed grouping of small pigmented macules arranged in a small or large group, often in a segmental pattern, each macule consisting of a lentiginous epidermal proliferation of melanocytes. We report five cases of agminated lentigines in otherwise healthy persons. Histologic exarnination of the pigmented lesion revealed findings consistent with lentigo simplex.
Humans ; Lentigo* ; Melanocytes

No abstract available.
Aged* ; Humans ; Lentigo*

Partial unilateral lentiginosis (PUL) is an unusual pigmentary disorder that's characterized by multiple lentigines in a unilateral distribution. The lesions often have a segmental pattern with a sharp demarcation at the midline. This is sometimes combined with other disorders such as neurofibromatosis or cafe-au-lait macules (CALMs). The presence of multiple CALMs in the same distribution as the lentigines on a PUL patient makes it difficult to differentiate PUL from segmental neurofibromatosis. We present here a 25-year-old woman with an unusual combination of several caf?-au-lait macules and scattered numerous lentigines involving the left side of the abdomen, flank and back.
Abdomen ; Adult ; Female ; Humans ; Lentigo ; Neurofibromatoses

Partial unilateral lentiginosis is a rare pigmentary disorder characterized by the numerous unilateral lentigines on the otherwise normal skin. A 13-year-old woman presented with asymptomatic multiple brownish macules on the left periorbital area. Her mother and maternal grandfather had the same clinical features on the left abdomen. Histologic examination of the pigmented lesion revealed findings consistent with lentigo simplex. We report an interesting case of partial unilateral lentiginosis with familial occurrence.
Abdomen ; Adolescent ; Female ; Humans ; Lentigo* ; Mothers ; Skin

Herein we report a case of lentigo maligna that evolved into lentigo maligna melanoma. Fifteen years ago, the patient developed a pigmented lesion on the right cheek. The lesion progressed slowly, and 2 months ago, a black nodular lesion was developed in the periphery of the pigmented lesion. Histopathologic examination of the lesions revealed findings consistent with lentigo maligna and lentigo maligna melanorna. She had been performed wide excision and cheek flap for reconstruction.
Cheek ; Humans ; Hutchinson's Melanotic Freckle* ; Lentigo* ; Melanoma*

Speckled lentiginous nevus is circumscribed patch of hyperpigmentation with smaller, darker pigmented macules or papules within the patch. The background shows histologic features of lentigo simplex. The speckled areas show junctional or compound nevus. Association of speckled lentiginous nevus with multiple spitz nevi was rarely reported. We report a case of multiple spitz nevi arising in a giant speckled lentiginous nevus.
Hyperpigmentation ; Lentigo ; Nevus* ; Nevus, Epithelioid and Spindle Cell*

BACKGROUND: Computer-aided image analysis (CAIA) has been suggested as an effective diagnostic tool for pigmented skin lesions (PSLs), especially melanoma. However, few studies on benign PSLs have been reported. OBJECTIVE: The purpose of this study was to evaluate benign PSLs with our CAIA software and analyze the differences between the parameters of those lesions. METHODS: By using homegrown CAIA software, we analyzed 3 kinds of PSLs-nevus, lentigo, and seborrheic keratosis. The group of seborrheic keratosis was divided into pigmented seborrheic keratosis, sebolentigine, and hyperkeratotic seborrheic keratosis. The CAIA was used to extract the color, as well as the morphological, textural, and topological features from each image. RESULTS: In line with clinical observations, the objective parameters indicated that nevus was dark and round, lentigo was small and bright, and seborrheic keratosis was large and spiky. The surface of nevus showed the highest contrast and correlation. In topological analysis, the concentricity clearly separated melanocytic lesions from seborrheic keratosis. The parameters of pigmented seborrheic keratosis were between those of typical nevus and seborrheic keratosis. CONCLUSION: We confirmed that definite correlations exist between the subjective differentiation by experts' examination and the objective evaluation by using CAIA. We also found that the morphological differences observed in CAIA were greatly influenced by the composition ratios of keratinocytes and melanocytes, which are already known histopathological characteristics of each PSL.
Bioengineering ; Keratinocytes ; Keratosis, Seborrheic ; Lentigo ; Melanocytes ; Melanoma ; Nevus ; Skin*

Tinea nigra is a superficial mold infection, by Phaeoannellomyces werneckii, rarely seen in Asia including Korea. Since the lesion can easily mimic a melanocytic lesion, it is important to recognize the infection before recommending unnecessary aggressive surgical procedures. We herein describe a case of tinea nigra presenting on the finger of a 41-year-old Caucasian man. Initially we diagnosed him as having lentigo, but fungal elements were detected by histopathologic examination. We recommend the routine KOH examination for the all pigmented lesion on the hands and feet.
Adult ; Asia ; Fingers ; Foot ; Fungi ; Hand ; Humans ; Korea ; Lentigo ; Tinea*