نتایج جستجو برای: melanocytic nevus

تعداد نتایج: 16301  

2016
Seong Min Kim Yoon Ji Shin Ju Sung Sim Beon Jae Lee Moon Kyung Joo Jong-Jae Park Young-Tae Bak

Melanocytic nevus is the benign proliferation of melanocytes. The most common location of melanocytic nevus is the skin of the extremities; however, there are few case reports of melanocytic nevus at the rectal mucosa. No prior case of malignant melanoma from melanocytic nevus at the rectal mucosa has been reported; therefore, it is unclear whether resection should be performed or close observa...

Journal: :Journal of cutaneous pathology 2005
Mark A Hurt

The article by Shapiro et al., which summarizes a survey of respondents on the words or phrases they use to identify the melanocytic nevus described by Clark et al. in 1978, shows that over 70% of The American Society of Dermatopathology (ASDP) members and nearly 85% of The American Academy of Dermatology (AAD) members preferred one of the following phrases: ‘‘dysplastic nevus’’, ‘‘nevus with a...

2014
Ana Carolina Leite Viana Bernardo Gontijo Flávia Vasques Bittencourt

Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ≥ 20 cm in adulthood. Its incidence is estimated in <1:20,000 newborns. Despite its rarity, this lesion is important because it may associate with severe complications such as malignant melanoma, affect the central nervous system (neurocutaneous melanosis), and have major ps...

2013
Ana Carolina Leite Viana Bernardo Gontijo Flávia Vasques Bittencourt

Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ≥ 20 cm in adulthood. Its incidence is estimated in <1:20,000 newborns. Despite its rarity, this lesion is important because it may associate with severe complications such as malignant melanoma, affect the central nervous system (neurocutaneous melanosis), and have major ps...

Journal: :Dermatology online journal 2016
Alfredo Agulló Brian Hinds Raquel Santesteban Josune Mitxelena Mitxelena Ignacio Yanguas

Agminated melanocytic nevus is an uncommon type of mole, characterized by a local group of macular or papular pigmented lesions, well demarcated, without a common pigmented background. This pattern has also been associated with Spitz nevi, dysplastic melanocytic nevi, and non-melanocytic lesions.We describe the onset of an acquired agminated melanocytic nevus after dabrafenib treatment. Our cas...

Journal: :Indian journal of dermatology, venereology and leprology 2004
A K Mukhopadhyay

Nevus of Ota is a dermal melanocytic nevus seen predominantly in females. It is uncommon in India. Its association with nevus of Ito, another dermal melanocytic nevus, is extremely rare. We report this rare association in a male patient, which is another interesting feature of the present case.

حاج حیدری, زهره, قاسمی, مریم, واحدی لاریجانی, لاله,

Nevi are a pigmented benign tumor in the skin but the malignant melanoma is a aggressive malignant neoplasm in the skin. A melanocytic nevus with an atypical epitheloid cell component is a benign neoplasm in skin that can be difficult to distinguish from melanoma. In this study we reported a case of melanocytic nevus with an atypical epitheloid cell component on the upper lip in 24 years old...

2014
Robert M. Hurwitz Larry J. Buckel Don-John Summerlin

Gross and microscopic criteria are morphologic and thus subjectivity abounds for the pathologist in the diagnosis of benign and malignant melanocytic proliferations [1]. The state-of-the-art criteria, often touted to be definitive, delineates between benign and malignant conditions clinically and histopathologically. This issue becomes murky, however, when the same criteria, on occasion, are pr...

2013
Robert M. Hurwitz

Differentiation of a melanocytic nevus and melanoma is often a dilemma clinically as well as histologically. This dilemma involves inexperienced as well as knowledgeable pathologists. The provoking question turns out to be: why is this differential diagnosis often a quandary? The answer lies in the fact that there are overlapping cytological and architectural criteria used interchangeably for a...

2012
Marina Leite da Silveira Flávia Regina Ferreira Marcia Lanzoni Alvarenga Samuel Henrique Mandelbaum

A giant congenital melanocytic nevus represents a rare condition. The halo phenomenon may be seen in congenital or acquired melanocytic nevi. In the literature, association of halo nevus and giant congenital melanocytic nevus is rare and the association of both with vitiligo even more rare. A 75-yearold woman at first consultation complained of a hyperchromic bluish-brown hairy macula on the lo...

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