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Irregular skin pigmentation

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https://www.readbyqxmd.com/read/29133658/role-of-amniotic-membrane-and-full-thickness-skin-graft-in-reconstruction-of-kissing-nevus-of-eyelids
#1
Manpreet Singh, Natasha Gautam, Manpreet Kaur, Zoramthara Zadeng
A 20-year-old girl presented with a large pigmented lesion over the temporal aspect of left lateral canthus involving the lateral one-third of both eyelids, since birth. A slow increase in its size had been noticed for the past 2 years. On examination, a hairy nevus measuring 34 mm × 22 mm was noticed involving left eyelid skin, the mucocutaneous junction (MCJ), palpebral conjunctiva, and lateral canthus. The surface was irregularly thick and covered with long, thick, and pigmented hairs. A clinical diagnosis of kissing nevus of eyelids was kept and a surgical resection with reconstruction planned...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29125708/integration-of-dermoscopy-and-reflectance-confocal-microscopy-for-distinguishing-melanomas-from-nevi-of-the-breast-area
#2
V D Mandel, C Bombonato, R Pampena, A Kyrgidis, S Borsari, E Benati, M Mirra, S Piana, G Pellacani, C Longo
BACKGROUND: Nevi of special sites encompass a class of benign lesions characterized by the presence of atypical clinical and histopathologic features that can be difficult to distinguish from melanoma. Dermoscopy and reflectance confocal microscopy may improve the clinical assessment of melanocytic lesions in order to avoid unnecessary excisions. OBJECTIVES: The aim of this study was to assess the value of specific dermoscopic and confocal criteria in distinguishing melanomas from nevi of the breast area...
November 10, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29043097/histological-study-on-the-effect-of-nicotine-on-adult-male-guinea-pig-thin-skin
#3
Sohair A Eltony, Safaa S Ali
Tobacco smoking has been identified as an important factor in premature skin aging to detect the histological changes occurred in adult male guinea pig thin skin under the influence of low and high doses of nicotine; which constitutes approximately 0.6%-3.0% of the dry weight of tobacco. Fifteen adult male pigmented guinea pigs were equally divided into three groups: group I, control; group IIA, low dose nicotine treated; 3 mg/kg subcutaneously for 4 weeks; and group IIB, high dose nicotine treated; 6 mg/kg subcutaneously for 4 weeks...
September 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28915279/first-consensus-on-primary-prevention-and-early-intervention-in-aesthetic-medicine
#4
Marina Landau, Chytra V Anand, Thierry Besins, Yates Yen Yu Chao, Sabrina Guillen Fabi, Uliana Gout, Martina Kerscher, Tatjana Pavicic, Peter Hsien Li Peng, Berthold Rzany, Gerhard Sattler, Tunk Tiryaki, Heidi A Waldorf, Andre Braz
BACKGROUND: Facial aging is a complex interplay of extrinsic and intrinsic factors leading to progressive changes in the skin, subcutaneous tissue, and bone. Clinical experience suggests that early aesthetic intervention may slow the signs of aging, but treatment in the absence of symptoms or with minimal signs of aging has not yet been properly addressed. OBJECTIVES: To provide treatment recommendations for primary prevention and early intervention in individuals with no or minimal signs of aging...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28816741/reflectance-confocal-microscopy-criteria-of-pigmented-squamous-cell-carcinoma-in-situ
#5
Neda Shahriari, Jane M Grant-Kels, Harold S Rabinovitz, Margaret Oliviero, Alon Scope
Pigmented squamous cell carcinoma in situ (pSCCis) is difficult to diagnose based on clinical and dermoscopic examination. Reflectance confocal microscopy (RCM) allows noninvasive differentiation between malignant and benign pigmented skin lesions. We determined the frequency of key RCM features of pSCCis and correlated the RCM criteria with the corresponding dermoscopic and histopathologic criteria. The study included 28 lesions with biopsy-proven diagnosis of pSCCis derived from 28 patients. Clinical, dermoscopic, and RCM images of these lesions were retrospectively analyzed by 3 independent observers...
August 9, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28813744/alkaptonuria-a-case-report-with-diagnostic-challenge
#6
Vasantha L Gali, Amy M Kerkvliet, Jacob M Kusmak, Jana K Elwood
Alkaptonuria is a rare autosomal recessive metabolic disorder caused by deficiency of homogentisic acid (HGA) oxidase, the only enzyme capable of catabolizing HGA. Deficiency of this enzyme leads to excess HGA which deposits in the connective tissue. We present a case of a 64-year-old woman who was referred to the dermatology clinic for a full body mole check and skin cancer screening. Clinically she had blue/gray pigmentation of the external ear and sclera. Also she had a domed papule on the left cheek with punctate gray pigmentation which was biopsied...
August 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28752785/localized-pigmentation-disorder-after-subcutaneous-pegylated-interferon-beta-1a-injection
#7
Giancarlo Coghe, Laura Atzori, Jessica Frau, Giuseppe Fenu, Lorena Lorefice, Maria Giovanna Marrosu, Eleonora Cocco
We report the case of a 42-year-old female patient who developed peculiar skin lesions due to subcutaneous polyethylene glycol (PEG) interferon beta-1a. The dermatological examination showed hypochromic macules that had coalesced into a 10-cm-diameter patch. On the abdomen injection sites, there was a greyish diffuse hyperpigmentation arranged irregularly in annular macules. Fungal infection, vitiligo and pityriasis alba were excluded. After 6 months, the lesions had worsened. This is the first case of localized pigmentation disorder reported with interferon beta, and while the clinical findings are not ascribable to vitiligo or interferon-related facial/mucosal hyperpigmentation, they may partially share the underlining mechanisms...
July 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28363663/enzymatic-debridement-of-deeply-burned-faces-healing-and-early-scarring-based-on-tissue-preservation-compared-to-traditional-surgical-debridement
#8
Alexandra Schulz, Paul Christian Fuchs, Irene Rothermundt, Alexandra Hoffmann, Lior Rosenberg, Yaron Shoham, Henrik Oberländer, Jennifer Schiefer
INTRODUCTION: Facial burns occur frequently and depending on the injured skin layers often heal with scars which may cause permanent functional and cosmetic sequelae. Preservation of the sensitive facial skin layers, especially of the dermis is essential for scarless epithelialisation. Enzymatic debridement of deep thermal burns has already been shown to assist with preserving viable dermis. However, up to date, there are no published reports on wound healing and in the long term aesthetic outcome after enzymatic debridement of facial burns...
March 28, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28160420/assessment-of-skin-pigmentation-by-confocal-microscopy-influence-of-solar-exposure-and-protection-habits-on-cutaneous-hyperchromias
#9
Ana Paula M Martini, Daiane G Mercurio, Patrícia M B G Maia Campos
BACKGROUND: Cutaneous hyperchromias are disorders of skin pigmentation involving an increase of melanin production and its irregular accumulation in skin cells. It is known that the use of sunscreens helps to prevent changes in the skin pigmentation pattern, but the structural and morphological alterations that occur in the different types of hyperpigmentations need better elucidation. OBJECTIVE: To assess the influence of solar exposure and protection habits on the pattern of skin pigmentation using reflectance confocal microscopy (RCM)...
February 3, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/27914108/diagnostic-usefulness-of-dermoscopy-in-differentiating-lichen-aureus-from-nummular-eczema
#10
Kee Suck Suh, Jong Bin Park, Myeong Hyeon Yang, Soo Young Choi, Hyun Hwangbo, Min Soo Jang
Lichen aureus (LA) is a variant of pigmented purpuric dermatosis that is characterized clinically by rust macules, papules or plaques, mainly on the legs. In some cases, LA can be difficult to be distinguished from nummular eczema (NE) with the naked eye. Dermoscopy can be applied to skin lesions, revealing additional features that can be highly valuable for correct diagnosis. This study was conducted to investigate characteristic dermoscopic findings of LA and to identify distinctive features that can differentiate it from NE...
December 3, 2016: Journal of Dermatology
https://www.readbyqxmd.com/read/27867747/early-diagnosis-of-genital-mucosal-melanoma-how-good-are-our-dermoscopic-criteria
#11
Tova Rogers, Melissa Pulitzer, Maria L Marino, Ashfaq A Marghoob, Oliver Zivanovic, Michael A Marchetti
BACKGROUND: There are limited studies on the dermoscopic features of mucosal melanoma, particularly early-stage lesions. Described criteria include the presence of blue, gray, or white colors, with a reported sensitivity of 100%. It is unclear if these features will aid in the detection of early mucosal melanoma or improve diagnostic accuracy compared to naked-eye examination alone. CASE: An Asian female in her fifties was referred for evaluation of an asymptomatic, irregularly pigmented patch of the clitoral hood and labia minora of unknown duration...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27771125/-nested-melanoma
#12
M-H Jegou, P Huet, I Penchet
BACKGROUND: Nested melanoma in elderly subjects is an entity that has been reported in the literature only since 2012. In this paper, we describe its distinctive clinical, dermatoscopic and histopathological features and compare them to previous published cases, with the aim of highlighting certain specific criteria of this melanoma subtype. CASE REPORT: A 52-year-old man was referred for the presence on his chest of a large suspicious pigmented lesion of irregular shape and colour...
January 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/27692457/well-aging-early-detection-of-skin-aging-signs
#13
REVIEW
Caterina Longo
The aim of the current review is to provide an overview of the use of reflectance confocal microscopy to detect early skin aging signs. This new imaging tool holds the promise to morphologically explore the epidermis and upper dermis at nearly histologic resolution and over time. The main confocal findings of aged skin include the presence of irregular honeycombed pattern, linear skin furrows, mottled pigmentation, and distinct collagen types (coarse and huddled).
October 2016: Dermatologic Clinics
https://www.readbyqxmd.com/read/27689028/cutaneous-melanoma-in-asians
#14
REVIEW
Sang Yub Kim, Sook Jung Yun
Malignant melanoma is a rare disease in Asians but potentially the most aggressive form of skin cancer worldwide. It can occur in any melanocyte-containing anatomic site. Four main cutaneous melanoma subtypes are recognized: lentigo maligna melanoma, superficial spreading melanoma, acral lentiginous melanoma (ALM), and nodular melanoma. Generally, excessive exposure to ultraviolet (UV) radiation increases the risk of melanoma. The exception is ALM, which is the most common melanoma subtype in Asians and is not associated with UV radiation...
September 2016: Chonnam Medical Journal
https://www.readbyqxmd.com/read/27449517/an-intronic-mbtps2-variant-results-in-a-splicing-defect-in-horses-with-brindle-coat-texture
#15
Leonardo Murgiano, Dominik P Waluk, Rachel Towers, Natalie Wiedemar, Joëlle Dietrich, Vidhya Jagannathan, Michaela Drögemüller, Pierre Balmer, Tom Druet, Arnaud Galichet, M Cecilia Penedo, Eliane J Müller, Petra Roosje, Monika M Welle, Tosso Leeb
We investigated a family of horses exhibiting irregular vertical stripes in their hair coat texture along the neck, back, hindquarters, and upper legs. This phenotype is termed "brindle" by horse breeders. We propose the term "brindle 1 (BR1)" for this specific form of brindle. In some BR1 horses, the stripes were also differentially pigmented. Pedigree analyses were suggestive of a monogenic X-chromosomal semidominant mode of inheritance. Haplotype analyses identified a 5 Mb candidate region on chromosome X...
2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27391775/dermoscopy-of-melanomas-on-the-trunk-and-extremities-in-asians
#16
MULTICENTER STUDY
Je-Ho Mun, Jungyoon Ohn, Woo-Il Kim, Sung-Min Park, Moon-Bum Kim
The incidence of melanoma among the Asian population is lower compared to that among the Western European population. These populations differed in their most common histopathologic subtypes, acral lentiginous melanoma being the most common in the Asian population. Although the dermoscopic features of the melanomas on the acral skin have been thoroughly investigated in the Asian population, studies concerning the dermoscopic patterns of melanomas on the non-acral skin have been scarce. The aim of this study was to investigate the dermoscopic patterns of melanomas on the trunk and extremities in the Asian population...
2016: PloS One
https://www.readbyqxmd.com/read/27389718/idiopathic-eruptive-macular-pigmentation-in-a-child-with-citrin-deficiency
#17
Chu-Li Fu, Yun-Feng Hu, Yuan-Zong Song
Idiopathic eruptive macular pigmentation (IEMP) is a rare dermatological disorder with generally unclear etiology and pathogenesis. A 5½-year-old girl was referred to hospital with a 10 month history of brown skin rashes. In early infancy, citrin deficiency had been diagnosed with the SLC25A13 genotype c.851_854del4/c.998G > A, but all clinical and laboratory abnormalities recovered following the introduction of a lactose-free and medium-chain triglyceride-enriched formula. Physical examination at referral indicated symmetric, multiple and non-scaly brown macules on the neck, trunk, buttocks and proximal parts of the extremities...
September 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27354886/correlation-between-the-evaluation-of-pigmented-lesions-by-a-multi-spectral-digital-skin-lesion-analysis-device-and-the-clinical-and-histological-features-of-melanoma
#18
Richard R Winkelmann, Darrell S Rigel, Laura Ferris, Arthur Sober, Natalie Tucker, Clay J Cockerell
OBJECTIVE: To correlate Multi-spectral Digital Skin Lesion Analysis classifier scores with histopathological severity of pigmented lesions and clinical features of melanoma. DESIGN: Classifier scores were computed for 1,632 skin lesions. Dermatologists evaluated the same lesions for Asymmetry, Border Irregularity, Color variegation, Diameter >6mm, Evolution, Patient's Concern, Regression, and/or "Ugly Duckling" sign. Classifier scores were correlated to the number of clinical risk features and for six histopathological severity levels of pigmented lesions...
March 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/27224897/melasma-and-post-inflammatory-hyperpigmentation-management-update-and-expert-opinion
#19
REVIEW
B Sofen, G Prado, J Emer
Dyschromia is a leading cause for cosmetic consultation, especially in those with diverse skin types (mixture of ethnicities) and with the rise of non-core and untrained physicians performing cosmetic procedures. Melasma and post-inflammatory hyperpigmentation (PIH) account for the majority of cases and are characterized by pigmented macules and patches distributed symmetrically in sun-exposed areas of the forehead, cheeks, and chin in melasma, and irregularly in areas of inflammation or an inciting traumatic event with PIH...
January 2016: Skin Therapy Letter
https://www.readbyqxmd.com/read/27222772/condylomata-lata-on-the-ankle-an-unusual-location
#20
Eri Ikeda, Akane Goto, Reiko Suzaki, Mizuki Sawada, Itaru Dekio, Sumiko Ishizaki, Mariko Fujibayashi, Hayato Takahashi, Masaru Tanaka
A 43-year-old Japanese man presented with reddish nodules on the ankle. The nodules had a yellowish crust and eroded surface. Dermoscopy revealed red to milky-red globules at the periphery and some glomerular vessels in the center and a whitish-pink network, which corresponded to capillary dilatation in the papillary dermis and prominent acanthosis, respectively. These structures were surrounded by a yellowish peripheral structureless area and multiple white, small, round structures in the center, corresponding to the macerated horny layer and keratin plugs...
April 2016: Dermatology Practical & Conceptual
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