Biomaterial Database

Sporadic dysplastic nevus syndrome in a tyrosinase-positive oculocutaneous albino. 1988

D L Levin, and D E Roth, and J E Muhlbauer

University of New York, Upstate Medical Center, Syracuse.

A case of dysplastic nevus syndrome in a 41-year-old tyrosinase-positive oculocutaneous albino man is presented. Clinically the patient exhibited multiple amelanotic lesions; histologic examination provided the diagnosis of dysplastic nevus syndrome. Fontana-Masson silver staining revealed the presence of melanin in the nevus cells. Hair bulbs incubated in tyrosine buffer produced melanin. This is the second reported case of dysplastic nevus syndrome in an oculocutaneous albino and the first case of dysplastic nevus syndrome in a tyrosinase-positive albino of which we are aware.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008543	Melanins	Insoluble polymers of TYROSINE derivatives found in and causing darkness in skin (SKIN PIGMENTATION), hair, and feathers providing protection against SUNBURN induced by SUNLIGHT. CAROTENES contribute yellow and red coloration.	Allomelanins,Melanin,Phaeomelanins
D004156	Catechol Oxidase	An enzyme of the oxidoreductase class that catalyzes the reaction between catechol and oxygen to yield benzoquinone and water. It is a complex of copper-containing proteins that acts also on a variety of substituted catechols. EC 1.10.3.1.	Diphenol Oxidases,Diphenol Oxidase,Polyphenol Oxidase,Polyphenoloxidase,Oxidase, Catechol,Oxidase, Diphenol,Oxidase, Polyphenol,Oxidases, Diphenol
D004416	Dysplastic Nevus Syndrome	Clinically atypical nevi (usually exceeding 5 mm in diameter and having variable pigmentation and ill defined borders) with an increased risk for development of non-familial cutaneous malignant melanoma. Biopsies show melanocytic dysplasia. Nevi are clinically and histologically identical to the precursor lesions for melanoma in the B-K mole syndrome. (Stedman, 25th ed)	B-K Mole Syndrome,Familial Atypical Multiple Mole-Melanoma,Nevus Syndrome, Dysplastic,Nevus, Dysplastic,Dysplastic Nevi,B K Mole Syndrome,Dysplastic Nevus,Familial Atypical Multiple Mole Melanoma,Nevi, Dysplastic,Syndrome, B-K Mole,Syndrome, Dysplastic Nevus
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000417	Albinism	General term for a number of inherited defects of amino acid metabolism in which there is a deficiency or absence of pigment in the eyes, skin, or hair.
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D014442	Monophenol Monooxygenase	An enzyme of the oxidoreductase class that catalyzes the reaction between L-tyrosine, L-dopa, and oxygen to yield L-dopa, dopaquinone, and water. It is a copper protein that acts also on catechols, catalyzing some of the same reactions as CATECHOL OXIDASE. EC 1.14.18.1.	Dopa Oxidase,Phenoloxidase,Tyrosinase,Cresolase,Phenol Oxidase,Phenoloxidase A,Phenoloxidase B,Monooxygenase, Monophenol,Oxidase, Dopa,Oxidase, Phenol