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https://www.readbyqxmd.com/read/28728861/-vitiligo-occurring-on-dermal-melanocytosis-nevus-of-ota-in-a-dark-skinned-patient
#1
K-C Ahogo, I-P Gbery, B Vagamon, O-A Ouattara, K-A Kouassi, H-S Kourouma, Y-I Kouassi
BACKGROUND: Nevus of Ota is a rare disease most frequently found in Asians. It presents clinically as a bluish gray hyperpigmentation of one side of the face. Transformation into melanoma and glaucoma are the main risks. The appearance of vitiligo lesions with poliosis within a nevus of Ota is exceptional. PATIENTS AND METHODS: A 22-year-old female patient with a nevus of Ota consulted for depigmentation of the eyelashes. Physical examination revealed hyperpigmentation in the right orbitofrontal part of her face, achromic macules and eyelash poliosis...
July 17, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28723760/bioinformatics-analysis-to-identify-the-critical-genes-micrornas-and-long-noncoding-rnas-in-melanoma
#2
Qian Zhang, Yang Wang, Jiulong Liang, Yaguang Tian, Yu Zhang, Kai Tao
Melanoma, which is usually induced by ultraviolet light exposure and the following DNA damage, is the most dangerous skin cancer. The purpose of the present study was to screen key molecules involved in melanoma.Microarray data of E-MTAB-1862 were downloaded from the ArrayExpress database, which included 21 primary melanoma samples and 11 benign nevus samples. In addition, the RNASeq version 2 and microRNA (miRNA) sequencing data of cutaneous melanoma were downloaded from The Cancer Genome Atlas database. After identifying the differentially expressed genes (DEGs) using Limma package, enrichment analysis and protein-protein interaction (PPI) network analysis were performed separately for them using DAVID software and Cytoscape software...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28719436/melanocytic-nevus-does-not-metastasize
#3
Kristin L Sticco, Alyssa Feiner, Sheng Chen
No abstract text is available yet for this article.
July 14, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28719046/retinal-pigment-epithelium-adenoma-in-vitreous-fluid-cytology
#4
Sandhya John, Madelyn Lew
Ocular cytology specimens are relatively uncommon, adding to the difficulty of their evaluation by cytopathologists. While melanomas account for a majority of primary intraocular pigmented lesions, other diagnostic considerations must be included in the differential. This brief report highlights a case of a pigmented ocular lesion in a 24-year-old man and key morphologic, immunohistochemical, and clinical differences between melanoma, melanocytoma, choroidal nevus, and retinal pigment epithelium (RPE) adenoma...
July 18, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28715582/iris-freckles-a-potential-biomarker-for-chronic-sun-damage
#5
Christoph Schwab, Christoph Mayer, Iris Zalaudek, Regina Riedl, Markus Richtig, Werner Wackernagel, Rainer Hofmann-Wellenhof, Georg Richtig, Gerald Langmann, Lisa Tarmann, Andreas Wedrich, Erika Richtig
Purpose: To investigate the role of sunlight exposure in iris freckles formation. Methods: We prospectively examined volunteers attending a skin cancer screening program conducted by ophthalmologists and dermatologists. Frequency and topographical variability of iris freckles were noted and associated with behavioral and dermatologic characteristics indicating high sun exposure. Results: Six hundred thirty-two participants (n = 360; 57% female) were examined...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28715145/the-autophagy-receptor-adaptor-p62-is-up-regulated-by-uva-radiation-in-melanocytes-and-in-melanoma-cells
#6
Ashley Sample, Baozhong Zhao, Chunli Wu, Steven Qian, Xianglin Shi, Andrew Aplin, Yu-Ying He
UVA (315-400 nm) is the most abundant in sunlight and is used in indoor tanning beds. However, much remains to be understood about the regulation of the UVA damage response in melanocytes and melanoma. Here we show that UVA, but not the shorter waveband UVB (280-315 nm), up-regulates adaptor protein p62 in an Nrf2- and ROS-dependent manner, suggesting a UVA-specific effect on p62 regulation. UVA-induced p62 up-regulation was inhibited by a mitochondria-targeted antioxidant or Nrf2 knockdown. In addition, p62 knockdown inhibited UVA-induced ROS production and Nrf2 up-regulation...
July 17, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28708295/cd13-is-a-marker-for-onychofibroblasts-within-nail-matrix-onychodermis-comparison-of-its-expression-patterns-in-the-nail-unit-and-in-the-hair-follicle
#7
Ji-Hye Park, Dong-Youn Lee, Kee-Taek Jang, Sang-Yun Ha, Ghee Young Kwon, Kyung-Hoon Lee, Jong Sup Shim, Eun Ji Kwon
BACKGROUND: We previously demonstrated the presence of onychodermis, a specialized mesenchymal cell population beneath the the nail matrix and proximal nail bed demonstrating CD10 expression. We hypothesize that the onychodermis could be the nail analog of the follicular dermal papilla, which is known to express CD13. We compare CD13 expression patterns between specialized mesenchymes of nail and hair, and compare these findings with CD10 expression patterns. METHODS: CD10 and CD13 immunohistochemisty was performed on polydactyly and adult cadaveric nail units, and on hair follicles in scalp nevus sebaceus excision specimens...
July 14, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28707325/effects-of-scalp-nerve-block-on-pain-and-emergence-agitation-after-paediatric-nevus-surgery-a-clinical-trial
#8
J-S Kim, G W Kim, D H Park, H E Ahn, M Y Chang, J Y Kim
BACKGROUND: Pain is considered as being one cause of post-operative emergence agitation (EA) from sevoflurane anaesthesia. The purpose of this study was to investigate the pure effect of post-operative pain on EA after sevoflurane anaesthesia in preschool children undergoing excision of scalp nevi. METHODS: Forty-four children, 1-7 years old, undergoing scalp nevus excision were enrolled. Patients were randomly assigned to two groups: the remifentanil group received single intravenous injection of short-acting synthetic opioid, remifentanil 1 μg/kg just before the scalp incision, and the block group received scalp nerve block with 0...
July 14, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28707317/acral-lentiginous-melanoma-a-skin-cancer-with-unfavourable-prognostic-features-a-study-of-the-german-central-malignant-melanoma-registry-cmmr-in-2050-patients
#9
Y Teramoto, U Keim, A Gesierich, G Schuler, E Fiedler, T Tüting, C Ulrich, U Wollina, J C Hassel, R Gutzmer, S Goerdt, C Zouboulis, U Leiter, T K Eigentler, C Garbe
BACKGROUND: Acral lentiginous melanoma (ALM) is one of the four major subtypes in cutaneous melanoma (CM). Although ALM has a poorer prognosis than other CM subtypes, the prognostic factors of ALM have been verified only in small-sized cohorts because of the low incidence of ALM worldwide. OBJECTIVES: To investigate clinical characteristics of ALM and to evaluate their prognostic values based on a large dataset from the Central Malignant Melanoma Registry (CMMR) of the German Dermatologic Society...
July 14, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28702965/hard-to-face-cutaneous-malignant-melanoma
#10
M Vaccaro, M Lentini, J Lotti, M Fioranelli, M G Roccia, T Lotti, C Guarneri
An 88-year-old Caucasian man recently sought medical attention due to recrudescence of skin disease in the area of previously excised nodule (in 2002) on the nose dorsum. The original lesion was clinically considered as a pigmented basal cell carcinoma, after which histological examination revealed a superficial spreading melanoma in vertical growth face (Clark level IV; Breslow thickness 2.1 mm) arising from a pre-existing nevus. The adjacent skin also showed significant actinic damage both in the epidermis and in the dermis...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28700401/wiesner-nevus-of-the-eyelid
#11
Marie Somogyi, Lance J Lyons, Vikram Durairaj
A healthy 31-year-old female presented with an elevated vascular lesion on the right lower eyelid margin. Histology results from excisional biopsy demonstrated a range of intradermally nested atypical melanocytes with negative staining for BRCA1-associated protein 1, confirming the diagnosis of Wiesner nevus. Wiesner nevi may be a cutaneous hallmark of the BRCA1-associated protein 1-associated cancer susceptibility syndrome, and to our knowledge, this is the first report of such a lesion presenting anywhere on the ocular adnexa...
July 10, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28686751/muckle-wells-syndrome-in-the-setting-of-basal-cell-nevus-syndrome
#12
Marie Wagener, Joseph W Laskas, Stephen Purcell, Tanya Ermolovich
Muckle-Wells syndrome (MWS) is a rare disorder inherited in an autosomal-dominant fashion that belongs to a group of hereditary periodic fever syndromes. It specifically belongs to the cryopyrin-associated periodic syndromes (CAPSs) in which there is a mutation in the NLRP3 (NLR family pyrin domain containing 3) gene that leads to overproduction of IL-1β, the source of the multisystem inflammatory symptoms. Muckle-Wells syndrome is characterized by a recurrent urticarial eruption that is associated with episodic fever, myalgia, arthralgia, malaise, progressive sensorineural hearing loss, and amyloid nephropathy (the most severe complication)...
June 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28682723/treating-giant-congenital-nevus-with-integra-dermal-regeneration-template-in-a-9-year-old-girl
#13
Zoran Barcot, Dakovic Bacalja Inga, Bozidar Zupancic, Vedran Bacalja
Integra dermal regeneration template has been well established in treating deep extensive burns, but there are very few cases reported of treating large full-thickness skin defects such as giant nevi. Apart from psychological and cosmetic burdens, the giant congenital nevus carries increased risk of malignant alteration. We present the case of a 9-year-old girl with a giant congenital nevus on her left lower leg. A total excision was done and she was successfully treated with Integra (LifeSciences Corp, Plainsboro, NJ)...
June 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28681498/tumescent-local-anaesthesia-for-early-dermatosurgery-in-infants
#14
M Heister, H M Häfner, H Breuninger, C Schulz, K Meier, L Kofler, C Spott, M Röcken, S M Schnabl, F C Eberle
BACKGROUND: Early paediatric dermatosurgery reveals excellent cosmetic results due to high skin-elasticity and pronounced capacity to recover from trauma. Furthermore, the size of skin lesions increases during life proportionally to skin growth and therefore early removal is of major importance. Selected local anaesthetics like prilocaine can cause methaemoglobinemia. However, in contrast to general anaesthesia many other local anaesthetics do not bare any major risks for infants. OBJECTIVE: In this retrospective study, we analysed infants aged less than 7 months receiving tumescent local anaesthesia (TLA) followed by dermatosurgery at our department between 2005 and 2015...
July 6, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28677299/tdt-expression-in-normal-and-neoplastic-sebaceous-cells
#15
Sofia-Eleni Tzorakoleftheraki, Alexandros Iliadis, Ioannis Kostopoulos, Triantafyllia Koletsa
AIMS: Terminal deoxynucleotidyl transferase (TdT) is a DNA polymerase expressed in immature, normal and neoplastic, lymphoid or hematopoietic cells and in neuroendocrine carcinomas, like Merkel cell carcinoma and small cell carcinoma. It has not yet been described in cells of epithelial origin. After observing TdT immunoreactivity in normal sebaceous glands we analyzed its spectrum of expression in cases of sebaceous cell hyperplasia and sebaceous cell neoplasms. METHODS & RESULTS: Twelve cases of sebaceous gland hyperplasia (SGH), and three cases of other benign lesions, namely, sebaceoma, sebaceous adenoma and sebaceous nevus, along with four archived cases of sebaceous cell carcinomas (SC) were collected and stained with TdT antibody...
July 5, 2017: Histopathology
https://www.readbyqxmd.com/read/28664989/evolution-of-spitz-nevi
#16
Nazan Emiroglu, Pelin Yıldız, Dilek Biyik Ozkaya, Anıl Gulsel Bahalı, Ozlem Su, Nahide Onsun
BACKGROUND/OBJECTIVES: Spitz nevi are melanocytic lesions with clinical, dermoscopic, and histopathologic presentations that may resemble those of melanoma. The evolution of Spitz nevi is a well-known feature. The objectives of this study were to investigate the clinical and dermoscopic features of Spitz nevi and define their evolution. METHODS: A retrospective observational study was performed and 70 Spitz nevi were analyzed using clinical and dermoscopic examination...
June 30, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28662374/multiple-oral-deep-penetrating-nevi-extending-to-the-masseter-and-buccal-fat-pad
#17
Eunae S Cho, Hye-Min Cho, Woong Nam, Hyun Sil Kim
The deep penetrating nevus (DPN) is a rare benign melanocytic tumor often clinically and histopathologically mistaken for malignant melanoma (MM) and other nevus types. This report describes an extremely rare case of multiple lesions of a large DPN in the oral cavity with extensive infiltration to the minor salivary gland, buccal fat pad, buccinators, and masseter muscles, yet with preservation of the normal anatomic architecture. After receiving a diagnosis of MM in another hospital, the patient was at risk for receiving a wide excision that included the masticatory muscles, facial nerve, and overlying skin...
June 1, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28659278/pathologists-diagnosis-of-invasive-melanoma-and-melanocytic-proliferations-observer-accuracy-and-reproducibility-study
#18
Joann G Elmore, Raymond L Barnhill, David E Elder, Gary M Longton, Margaret S Pepe, Lisa M Reisch, Patricia A Carney, Linda J Titus, Heidi D Nelson, Tracy Onega, Anna N A Tosteson, Martin A Weinstock, Stevan R Knezevich, Michael W Piepkorn
Objective To quantify the accuracy and reproducibility of pathologists' diagnoses of melanocytic skin lesions.Design Observer accuracy and reproducibility study.Setting 10 US states.Participants Skin biopsy cases (n=240), grouped into sets of 36 or 48. Pathologists from 10 US states were randomized to independently interpret the same set on two occasions (phases 1 and 2), at least eight months apart.Main outcome measures Pathologists' interpretations were condensed into five classes: I (eg, nevus or mild atypia); II (eg, moderate atypia); III (eg, severe atypia or melanoma in situ); IV (eg, pathologic stage T1a (pT1a) early invasive melanoma); and V (eg, ≥pT1b invasive melanoma)...
June 28, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28658923/sturge-weber-syndrome-a-case-study
#19
Mahesh Neerupakam, Podduturi Sanjay Reddy, Beeraboina Anand Babu, Guttikonda Vamsi Krishna
The aim of this case review was to touch upon the various clinical presentations and diagnostic features of Sturge-Weber syndrome (SWS) as seen in the dental/medical practice. Sturge-Weber syndrome is a rare congenital disorder that belongs to a group of disorders collectively known as the phakomatoses. The characteristic pathological elements of the disease include leptomeninges angioma extending out to cerebral cortex with angiomatous lesions on the same side and unilateral facial nevus that affects trigeminal nerve division...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28657121/differential-ube2c-and-hoxa1-expression-in-spitz-nevus-and-melanoma
#20
Stefan Kraft, Johanna B Moore, Alona Muzikansky, Kenneth L Scott, Lyn M Duncan
BACKGROUND: Recent molecular advances suggest that Spitz nevi and other spitzoid neoplasms are biologically distinct from melanoma and conventional nevi. The ubiquitin ligase UBE2C and the homeobox transcription factor HOXA1 are candidate oncogenes in melanoma. METHODS: Using RNA expression analysis and immunohistochemistry, we evaluated these biomarkers in Spitz nevi (n = 20) melanoma (n = 20), and by immunohistochemistry in conventional nevi (n = 20)...
June 28, 2017: Journal of Cutaneous Pathology
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