Results 341 to 350 of about 123,035 (391)
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Non-melanocytic lesions mimicking melanocytic lesions
Pathology, 2004Distinction between benign and malignant melanocytic lesions commonly represents a big challenge for the pathologist. Equally difficult is separating tumours with melanocytic lineage from those displaying other lines of differentiation. This is because benign and malignant melanocytic lesions are able to display a wide range of histological appearances
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Current Opinion in Pediatrics, 2020
Purpose of review To update pediatric providers on new developments in our understanding of the clinical presentation, genetics, and systemic risks associated with congenital melanocytic nevi (CMN). Recent findings CMN are primarily caused by sporadic postzygotic somatic mutations ...
Danna, Moustafa +2 more
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Purpose of review To update pediatric providers on new developments in our understanding of the clinical presentation, genetics, and systemic risks associated with congenital melanocytic nevi (CMN). Recent findings CMN are primarily caused by sporadic postzygotic somatic mutations ...
Danna, Moustafa +2 more
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International Ophthalmology, 2011
We report a case of a 37-year-old male with a conjunctival melanocytic nevus presenting in a rare, peripunctal location with preservation of the lacrimal canaliculus and punctum.
Cindy S, Hwang +2 more
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We report a case of a 37-year-old male with a conjunctival melanocytic nevus presenting in a rare, peripunctal location with preservation of the lacrimal canaliculus and punctum.
Cindy S, Hwang +2 more
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Australasian Journal of Dermatology, 2009
ABSTRACTCongenital melanocytic naevi, consisting of clusters of naevo‐melanocytes, develop in utero. Although many congenital naevi are visible at birth, some may not become evident until later in life. The timing of naevo‐melanocyte proliferation, senescence and melanogenesis may all contribute towards determining when a naevus will become clinically ...
Ivanka, Kovalyshyn +2 more
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ABSTRACTCongenital melanocytic naevi, consisting of clusters of naevo‐melanocytes, develop in utero. Although many congenital naevi are visible at birth, some may not become evident until later in life. The timing of naevo‐melanocyte proliferation, senescence and melanogenesis may all contribute towards determining when a naevus will become clinically ...
Ivanka, Kovalyshyn +2 more
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International Journal of Dermatology, 1990
Abstract:Thirty‐five percent of 363 melanocytic nevi were found to have a keratotic epithelial architectural pattern that was mostly infundibular and not previously emphasized. Keratotic melanocytic nevi were commonly from the trunk of women, and most were associated with an intradermal melanocytic nevus.
O, Gurbuz, R M, Hurwitz
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Abstract:Thirty‐five percent of 363 melanocytic nevi were found to have a keratotic epithelial architectural pattern that was mostly infundibular and not previously emphasized. Keratotic melanocytic nevi were commonly from the trunk of women, and most were associated with an intradermal melanocytic nevus.
O, Gurbuz, R M, Hurwitz
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Ultrastructural Pathology, 1994
Electron microscopic examination was performed of skin biopsy specimens processed for electron microscopy directly after formaldehyde fixation, after retrieval from paraffin blocks, and as for paraffin embedding but with retrieval after clearing with xylene, the last step before paraffin infiltration.
M, Tata, G S, Sidhu
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Electron microscopic examination was performed of skin biopsy specimens processed for electron microscopy directly after formaldehyde fixation, after retrieval from paraffin blocks, and as for paraffin embedding but with retrieval after clearing with xylene, the last step before paraffin infiltration.
M, Tata, G S, Sidhu
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Veterinary Clinics of North America: Equine Practice, 2013
Melanomas are among the most common skin tumors in horses, with prevalence rates reaching as high as 80% in adult gray horses. Most melanocytic tumors are benign at initial presentation; however, if left untreated, up to two-thirds can progress to overt malignant behavior.
Jeffrey C, Phillips, Luis M, Lembcke
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Melanomas are among the most common skin tumors in horses, with prevalence rates reaching as high as 80% in adult gray horses. Most melanocytic tumors are benign at initial presentation; however, if left untreated, up to two-thirds can progress to overt malignant behavior.
Jeffrey C, Phillips, Luis M, Lembcke
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Journal of Craniofacial Surgery, 2003
Congenital nevi are characterized by the appearance of pigmented areas that range in size, shape, surface texture, and hairiness. In most cases, the nevus remains stable and benign, but because of possible malignant transformation, nevi are often excised.
Gillian, Lindzon, Ronald M, Zuker
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Congenital nevi are characterized by the appearance of pigmented areas that range in size, shape, surface texture, and hairiness. In most cases, the nevus remains stable and benign, but because of possible malignant transformation, nevi are often excised.
Gillian, Lindzon, Ronald M, Zuker
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Clinics in Plastic Surgery
Congenital melanocytic nevi are benign neoplasms, which present early in life at various anatomic locations with a variety of clinical presentations. When evaluating large or giant nevi, it's important to use a multidisciplinary team and rule out comorbid conditions, such as neurocutaneous melanosis.
Nathan, Shelby +3 more
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Congenital melanocytic nevi are benign neoplasms, which present early in life at various anatomic locations with a variety of clinical presentations. When evaluating large or giant nevi, it's important to use a multidisciplinary team and rule out comorbid conditions, such as neurocutaneous melanosis.
Nathan, Shelby +3 more
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Malignant Melanocytic Trichoblastoma
Annals of Plastic Surgery, 2006Trichoblastoma is an uncommon benign cutaneous neoplasm of the hair germ cell. The pigmented variety of the tumor is rare. There have only been a few case reports describing the malignant counterpart of trichoblastoma. There are no reports describing a pigmented variety of malignant trichoblastoma.
Ramazi O, Datiashvili +4 more
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