keyword
MENU ▼
Read by QxMD icon Read
search

Melanocytic lesions

keyword
https://www.readbyqxmd.com/read/28436290/topography-of-protein-kinase-c-%C3%AE-ii-in-benign-and-malignant-melanocytic-lesions
#1
Konstanin Krasagakis, Eleftheria Tsentelierou, Gregory Chlouverakis, Efstathios N Stathopoulos
BACKGROUND: Protein kinase C βII promotes melanogenesis and affects proliferation of melanocytic cells but is frequently absent or decreased in melanoma cells in vitro. OBJECTIVE: To investigate PKC-βII expression and spatial distribution within a lesion in various benign and malignant melanocytic proliferations. METHODS: Expression of PKC-βII was semiquantitatively assessed in the various existing compartments (intraepidermal [not nested], junctional [nested], and dermal) of benign (n = 43) and malignant (n = 28) melanocytic lesions by immunohistochemistry...
April 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28430732/noninvasive-rcm-for-differentiation-of-melanotic-macules-from-melanocytic-lesions-blinded-evaluation-of-a-series-of-42-pigmented-macules
#2
Martin Laimer, Edith Arzberger, Clara-Anna Kirchner, Christine Prodinger, Rainer Hofmann-Wellenhof, Verena Ahlgrimm-Siess
BACKGROUND: Differentiation of melanotic macules from melanocytic lesions, most importantly of melanoma, is a common problem on clinical-dermoscopic examination. OBJECTIVE: To assess the value of noninvasive reflectance confocal microscopy (RCM) in the differential diagnosis of melanotic macules and melanocytic lesions. PATIENTS AND METHODS: Reflectance confocal microscopy images of 42 pigmented macules on mucocutaneous junctions of genitalia and lips, including 31 melanotic macules, 6 nevi, and 5 melanomas, were retrospectively and independently assessed in a blinded manner by one expert observer and 2 less experienced observers together...
April 19, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28425593/medium-sized-nevus-spilus-of-the-neck-treated-with-pulsed-dye-laser
#3
Vito Abrusci, Valentina Benzecry
Patients with large benign melanocytic lesions located on the neck represent a therapeutic challenge since the neck is a high-risk area for hypertrophic scarring and/or retraction. When treating a benign, extensive and visible melanocytic lesion, the choice of therapy mainly depends on the likelihood of improved cosmesis. We report a case of a 33-year-old woman with a medium-sized Nevus Spilus located on the neck, successfully treated with four sessions of pulsed dye laser. We achieved an excellent clinical and cosmetic result in such a challenging area...
April 20, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28421728/oral-pigmentations-in-physiologic-conditions-post-inflammatory-affections-and-systemic-diseases
#4
Martina Lambertini, Annalisa Patrizi, Giulia M Ravaioli, Emi Dika
Melanocytes are found throughout the oral mucosa but usually go unnoticed because of their relatively low level of pigment production. When focally or generally active in pigment production or proliferation they may be responsible for several affections in the oral mucosae ranging from physiologic pigmentation, systemic diseases to malignant neoplasms. The diagnosis of oral pigmentations (OP) is usually challenging for the physician, but a careful examination of the oral cavity may reveal the first manifestation of underlying systemic diseases...
April 19, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28421597/analysis-of-an-electrical-impedance-spectroscopy-system-in-short-term-digital-dermoscopy-imaging-of-melanocytic-lesions
#5
L Rocha, S W Menzies, S Lo, M Avramidis, R Khoury, L Jackett, P Guitera
BACKGROUND: Electrical impedance spectroscopy (EIS) is a non-invasive diagnostic technique that measures tissue impedance. OBJECTIVES: This prospective study, conducted at 2 centres in Australia, aimed to evaluate the effect of adding an EIS measurement at baseline to suspicious melanocytic lesions undergoing routine short-term sequential digital dermoscopy imaging (SDDI) METHODS: Patients presented with suspicious melanocytic lesions that were eligible for short-term SDDI (with no clear feature of melanoma on dermoscopy)...
April 19, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28413547/supratentorial-intermediate-grade-meningeal-melanocytoma-with-intratumoral-bleed-in-the-background-of-neurocutaneous-melanosis-report-of-an-unusual-case-and-review-of-literature
#6
Kuntal Das, Anup Nair, Sushila Jaiswal, Rabi Sahu, Arun Srivastava, Raj Kumar, Anant Mehrotra
Primary melanocytic tumours of the central nervous system (CNS) are rare. According to the WHO classification (2007), these tumours include diffuse leptomeningeal melanosis, melanomatosis, melanocytoma, and primary CNS melanoma. Meningeal melanocytoma, most commonly seen in the infratentorial compartment and cervical spinal cord, is a benign primary melanocytic neoplasm. Primary CNS melanoma, on the other hand, represents the malignant end of the spectrum. Intermediate grade melanocytoma is a rare histological subtype of primary meningeal tumours and is characterised by the clinicopathological features between the two extremes...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28403573/desmoplastic-melanoma-may-mimic-a-cutaneous-peripheral-nerve-sheath-tumor-report-of-three-challenging-cases
#7
Isidro Machado, Beatriz Llombart, Julia Cruz, Víctor Traves, Celia Requena, Eduardo Nagore, Antonina Parafioriti, Carlos Monteagudo, Antonio Llombart-Bosch
Desmoplastic melanoma (DM) and cutaneous malignant peripheral nerve sheath tumors (MPNST) reveal histological and immunohistochemical similarities, including S100 positivity and negative staining for conventional melanocytic markers. We present three cases of cutaneous S100-positive spindle cell tumors in elderly patients, in which first findings led to initial misdiagnoses as cutaneous MPNST and benign peripheral sheath nerve tumor (neurofibroma). The identification of adjacent atypical melanocytic hyperplasia in the overlying skin along with tumor cell proliferation, also in the superficial dermis, the neurotropic component and the absence of any relationship between the tumor and a major nerve, pre-existing neural benign tumor or the existence of stigmata suggestive of neurofibromatosis raised consideration of a desmoplastic melanoma...
April 12, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28400894/surgical-suturing-induced-melanocytic-nevi-a-new-type-of-eruptive-melanocytic-nevi
#8
Alexander C Katoulis, Dimitrios Sgouros, Giuseppe Argenziano, Efstathios Rallis, Ioannis Panayiotides, Dimitrios Rigopoulos
BACKGROUND: Nevogenesis is a complex process involving several pathogenetic mechanisms, including genetic factors, hormonal influences and UV-radiation. Trauma has been described as a triggering factor for an alternative pathway of nevogenesis. Eruptive melanocytic nevi (EMN), related either to immunosuppression or to blistering disorders, represent a special type of nevi probably induced by the disruption of the dermo-epidermal junction and consequent proliferation of quiescent pigment cells during re-epithelization...
November 30, 2016: Journal of Dermatological Case Reports
https://www.readbyqxmd.com/read/28398952/vulvar-and-anal-intraepithelial-neoplasia-terminology-diagnosis-and-ancillary-studies
#9
REVIEW
Eric J Yang, Christina S Kong, Teri A Longacre
Currently, it is recognized that there is an HPV-related and an HPV-independent pathway to developing squamous cell carcinomas (SCC) in the anus and vulva. The majority of precursor lesions and SCC in the anus and vulva are high-risk HPV-associated, with HPV16 the most common type. Given the morphologic overlap and biological equivalence of HPV-related preinvasive squamous lesions of the lower anogenital tract, a unified, 2-tiered histopathologic nomenclature is now recommended. In contrast, mutations in the TP53 gene have been associated with HPV-independent vulvar and anal SCC...
May 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28397109/increasing-frequency-of-seborrheic-keratosis-diagnoses-as-a-favorable-consequence-of-teledermatology-based-skin-cancer-screening-a-cross-sectional-study-of-34-553-patients
#10
David Moreno-Ramírez, Jesús Raya-Maldonado, Macarena Morales-Conde, Teresa Ojeda-Vila, Francisco J Martín-Gutiérrez, Andrés Ruíz-de-Casas, Almudena Fernández-Orland, Herrerías-Esteban Jm, Lara Ferrándiz
BACKGROUND: Screening of skin cancer by teledermatology (TD) has improved the early detection of skin cancer by enhancing access to skin cancer clinics. OBJECTIVE: We sought to analyze how TD-based skin cancer screening has changed the frequency of consultations for benign lesions. PATIENTS AND METHODS: A cross-sectional study including teleconsultations received during a 7-year period was conducted to analyze and compare the trendlines of each lesion type over the study period...
April 10, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28394801/myxoid-spitz-nevi-report-of-6-cases
#11
Angel Fernandez-Flores, Erica Riveiro-Falkenbach, David S Cassarino
Mucin deposition in Spitz nevus seems to be a very rare phenomenon, as there have only been 3 cases previously published. We report 6 additional cases, half of them in women, and half in men. The ages of the patients varied from 5 to 47 years (mean = 30.17). Sizes of the nevi varied from 3 to 6 mm. Four lesions were located on the extremities, whereas one was located on the trunk (there was no clinical information about the other). A vascular lesion was suspected in 2 cases. Excision with clear margins was achieved in all cases but one...
March 27, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28377414/diagnostic-distinction-of-malignant-melanoma-and-benign-nevi-by-a-gene-expression-signature-and-correlation-to-clinical-outcomes
#12
Jennifer Ko, Balwir Matharoo-Ball, Steven D Billings, Brian J Thomson, Jean Y Tang, Kavita Y Sarin, Emily Cai, Jinah Kim, Colleen Rock, Hillary Kimbrell, Darl D Flake, M Bryan Warf, Jonathan Nelson, Thaylon Davis, Catherine Miller, Kristen Rushton, Anne-Renee Hartman, Richard J Wenstrup, Loren E Clarke
BACKGROUND: Histopathologic examination alone can be inadequate for diagnosis of certain melanocytic neoplasms. Recently, a 23-gene expression signature was clinically validated as an ancillary diagnostic test to differentiate benign nevi from melanoma. The current study assessed the performance of this test in an independent cohort of melanocytic lesions against clinically proven outcomes. METHODS: Archival tissue from primary cutaneous melanomas and melanocytic nevi was obtained from four independent institutions and tested with the gene signature...
April 4, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28372349/perivascular-epithelioid-cell-tumor-in-the-stomach
#13
Sun Ah Shin, Jiwoon Choi, Kyung Chul Moon, Woo Ho Kim
Perivascular epithelioid cell tumors or PEComas can arise in any location in the body. However, a limited number of cases of gastric PEComa have been reported. We present two cases of gastric PEComas. The first case involved a 62-year-old woman who presented with a 4.2 cm gastric subepithelial mass in the prepyloric antrum, and the second case involved a 67-year-old man with a 5.0 cm mass slightly below the gastroesophageal junction. Microscopic examination revealed that both tumors were composed of perivascular epithelioid cells that were immunoreactive for melanocytic and smooth muscle markers...
April 4, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28368924/smarcb1-ini1-loss-in-epithelioid-schwannoma-a-clinicopathologic-and-immunohistochemical-study-of-65-cases
#14
Vickie Y Jo, Christopher D M Fletcher
The epithelioid variant of schwannoma is rare, and loss of SMARCB1/INI1 expression has been observed in a subset of cases. Our aim was to further define the clinicopathologic features and to evaluate SMARCB1/INI1 deficiency in a large cohort of 65 epithelioid schwannomas diagnosed between 2002 and 2015, which consisted of 32 men and 33 women with median age at diagnosis of 45 years (range, 13 to 75 y). Most tumors arose in the extremities (upper, 20, lower, 15) and trunk (17); 9 were visceral (8 gastrointestinal)...
March 31, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28368380/risk-of-melanocytic-nevi-and-nonmelanoma-skin-cancer-in-children-after-allogeneic-hematopoietic-stem-cell-transplantation
#15
J S Song, W B London, E B Hawryluk, D Guo, M Sridharan, D E Fisher, L E Lehmann, C N Duncan, J T Huang
There is a known increased risk of skin cancer in the adult population after hematopoietic stem cell transplantation (HSCT). However, late dermatologic effects that children may experience after HSCT have not been well described. The primary objective of this study was to characterize nevi and skin cancers affecting children after allogeneic HSCT. A cross-sectional cohort study of 85 pediatric HSCT recipients and 85 controls matched for age, sex and skin phototype was performed at a single institution. All participants underwent a full skin examination...
April 3, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28355453/dermoscopic-clues-for-diagnosing-melanomas-that-resemble-seborrheic-keratosis
#16
Cristina Carrera, Sonia Segura, Paula Aguilera, Massimiliano Scalvenzi, Caterina Longo, Alicia Barreiro, Paolo Broganelli, Stefano Cavicchini, Alex Llambrich, Pedro Zaballos, Luc Thomas, Josep Malvehy, Susana Puig, Iris Zalaudek
Importance: Melanomas that clinically mimic seborrheic keratosis (SK) can delay diagnosis and adequate treatment. However, little is known about the value of dermoscopy in recognizing these difficult-to-diagnose melanomas. Objective: To describe the dermoscopic features of SK-like melanomas to understand their clinical morphology. Design, Setting, and Participants: This observational retrospective study used 134 clinical and dermoscopic images of histopathologically proven melanomas in 134 patients treated in 9 skin cancer centers in Spain, France, Italy, and Austria...
March 29, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28353563/tissue-expansion-in-the-treatment-of-giant-congenital-melanocytic-nevi-of-the-upper-extremity
#17
Tengxiao Ma, Ke Fan, Lei Li, Feng Xie, Hao Li, Haiyan Chou, Zhengwen Zhang
The aim of our study was to use tissue expansion for the treatment of giant congenital melanocytic nevi of the upper extremity and examine potential advantages over traditional techniques.There were 3 stages in the treatment of giant congenital melanocytic nevi of the upper extremities using tissue expansion: first, the expander was inserted into the subcutaneous pocket; second, the expander was removed, lesions were excised, and the wound of the upper extremity was placed into the pocket to delay healing; third, the residual lesion was excised and the pedicle was removed...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28345133/second-primary-melanoma-on-a-patient-undergoing-vemurafenib-therapy-a-case-report
#18
Giuliana Onnis, Giuseppe Palmieri, Maria Antonietta Montesu, Rosanna Satta
BACKGROUND: Several side effects have been reported during treatment with vemurafenib, including multiple benign lesions and, less frequently, atypical melanocytic proliferations and second primary melanomas. METHODS: A 46-year-old man undergoing vemurafenib therapy for metastatic malignant melanoma was clinically and dermoscopically monitored using total-body mapping. RESULTS: During BRAF inhibitor (BRAFi) treatment, the patient developed atypical melanocytic lesions and particularly secondary primary melanoma...
March 26, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28335280/pregnancy-vaccination-with-gold-glyco-nanoparticles-carrying-listeria-monocytogenes-peptides-protects-against-listeriosis-and-brain-and-cutaneous-associated-morbidities
#19
Ricardo Calderón-Gonzalez, Héctor Terán-Navarro, Elisabet Frande-Cabanes, Eva Ferrández-Fernández, Javier Freire, Soledad Penadés, Marco Marradi, Isabel García, Javier Gomez-Román, Sonsoles Yañez-Díaz, Carmen Álvarez-Domínguez
Listeriosis is a fatal infection for fetuses and newborns with two clinical main morbidities in the neonatal period, meningitis and diffused cutaneous lesions. In this study, we vaccinated pregnant females with two gold glyconanoparticles (GNP) loaded with two peptides, listeriolysin peptide 91-99 (LLO91-99) or glyceraldehyde-3-phosphate dehydrogenase 1-22 peptide (GAPDH1-22). Neonates born to vaccinated mothers were free of bacteria and healthy, while non-vaccinated mice presented clear brain affections and cutaneous diminishment of melanocytes...
August 19, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28332777/diagnostic-performance-of-the-melafind-device-in-a-real-life-clinical-setting
#20
Christine Fink, Claudia Jaeger, Katharina Jaeger, Holger A Haenssle
BACKGROUND: MelaFind is a multispectral computer vision system intended to -provide additional information on melanocytic lesions suspected of being melanoma by -objectively assessing their three-dimensional morphology. OBJECTIVES: Analysis of the diagnostic performance of MelaFind in a real-life clinical setting. PATIENTS AND METHODS: In this observational study, 360 pigmented skin lesions (PSL) in 111 patients were assessed by office-based dermatologists using MelaFind...
March 23, 2017: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
keyword
keyword
120442
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"