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https://www.readbyqxmd.com/read/28329595/pigmented-lesion-of-the-nipple-a-clinicopathological-challenge
#1
Júlia Vide, Artur César, Pedro Rodrigues Pereira, Filomena Azevdo
Differential diagnoses of pigmented lesions of the nipple include melanocytic nevus, melanosis of the nipple, seborrheic keratosis, pigmented basal cell carcinoma, melanoma and Paget disease. The histologic exam with appropriate immunohistochemistry is a fundamental tool to achieve a correct diagnosis. We present a patient with a pigmented lesion of her right nipple revealing mammary Paget disease and elucidate diagnostic obstacles and prognostic importance of early breast cancer detection.
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28317165/dermoscopic-findings-of-an-unusual-acral-nevus-on-the-hand-of-a-child
#2
Tracey N Liebman, Marla N Diakow, Sharon A Glick
Distinguishing benign acral nevi from small early acral melanomas may be challenging in certain cases. Dermoscopy is a noninvasive imaging technique that can help clinicians better visualize deeper lesion structures and thus more easily differentiate benign nevi from melanoma. We report the case of a 13-year-old girl with a changing dark brown to black macule with a central papular component on the volar surface of the right third finger. Dermoscopy revealed asymmetrically distributed irregular black blotches on a bluish-black background...
March 20, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28300909/multiple-cutaneous-melanomas-associated-with-gastric-and-brain-metastases
#3
Lara Caroline Grander, Fernanda Cabral, Alice Paixão Lisboa, Gabrielle Vale, Carlos Baptista Barcaui, Juan Manuel Pineiro Maceira
The occurrence of multiple primary melanomas in a single individual is rare. Most commonly, malignant melanocytic lesions subsequent to the initial diagnosis of melanoma are secondary cutaneous metastases. We report a patient with gastrointestinal bleeding from gastric metastasis of cutaneous melanoma. During clinical evaluation and staging, we discovered a brain metastasis associated with 3 synchronous primary cutaneous melanomas. We suggest the research on the mutation in the cyclin-dependent kinase inhibitor 2A (CDKN2A) (INK4a) in such cases...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300894/phacomatosis-pigmentovascularis-of-cesioflammea-type
#4
Delky Johanna Villarreal Villarreal, Fabiano Leal
Phacomatosis pigmentovascularis is a rare syndrome, defined as the simultaneous presence of vascular nevus and melanocytic nevus in the same patient. We report the case of a 53-year-old woman presented with dermal melanosis and extensive vascular nevus, which match the typical manifestations of phakomatosis pigmetovascularis of cesioflammea type, according to Happle's classification. The rare occurrence of this genodermatosis and the clinical exuberance of the skin lesions motivated this case report.
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300885/chemical-leukoderma-induced-by-dimethyl-sulfate
#5
Maya Valeska Gozali, Jia-An Zhang, Fei Yi, Bing-Rong Zhou, Dan Luo
Chemical leukoderma occurs due to the toxic effect of a variety of chemical agents. Mechanisms include either destruction or inhibition of melanocytes. We report two male patients (36 and 51 years old) who presented with multiple hypopigmented macules and patches on the neck, wrist, and legs after exposure to dimethyl sulfate in a chemical industry. Physical examination revealed irregular depigmentation macules with sharp edges and clear hyperpigmentation around the lesions. History of repeated exposure to a chemical agent can help the clinical diagnosis of chemical leukoderma...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28299002/impression-cytology-in-a-series-of-clinically-diagnosed-ocular-surface-melanocytic-lesions
#6
Mozhgan Rezaei Kanavi, Seyed Bagher Hosseini, Roshanak Aliakbar-Navahi, Hossein Aghaei
PURPOSE: To report impression cytology (IC) results of clinically diagnosed ocular surface melanocytic lesions. METHODS: Ten patients with a clinical diagnosis of an ocular surface melanocytic lesion underwent IC using cellulose acetate strips and Periodic acid Schiff-Papanicolaou staining. Excisional biopsy of lesions was performed in case of observing atypical cells on IC or at the patient's request, and excised specimens were subjected to histopathological analysis...
January 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28290622/melanoma-and-melanocytic-nevi-in-paediatric-patients-a-single-institution-experience
#7
Paola Sgubbi, Francesco Savoia, Emi Dika, Iria Neri, Pier A Fanti, Annalisa Patrizi
BACKGROUND: Melanoma is an infrequent neoplasm in children and adolescents. The number of consultancies for melanocytic nevi control in the paediatric population is increased by the major anxiety of parents and paediatricians. METHODS: A retrospective chart review was performed in order to evaluate the incidence rate of melanoma, Spitz nevi, congenital and acquired melanocytic nevi in patients aged 14 years or less and referred to our institution from April 2010 to September 2015...
March 14, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28284778/detection-of-aberrant-tert-promoter-methylation-by-combined-bisulfite-restriction-enzyme-analysis-for-cancer-diagnosis
#8
Seungjae Lee, Sumit Borah, Armita Bahrami
Aberrant CpG dinucleotide methylation in a specific region of the telomerase reverse transcriptase (TERT) promoter is associated with increased TERT mRNA levels and malignancy in several cancer types. However, routine screening of this region to aid cancer diagnosis can be challenging because i) several established methylation assays may inaccurately report on hypermethylation of this particular region, ii) interpreting the results of methylation assays can sometimes be difficult for clinical laboratories, and iii) use of high-throughput methylation assays for a few patient samples can be cost prohibitive...
March 8, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28274670/detection-of-copy-number-variations-in-melanocytic-lesions-utilising-array-based-comparative-genomic-hybridisation
#9
Nima Mesbah Ardakani, Carla Thomas, Cleo Robinson, Kym Mina, Nathan Tobias Harvey, Benhur Amanuel, Benjamin Andrew Wood
Distinction between melanocytic naevi and melanoma occasionally poses a diagnostic challenge in ambiguous cases showing overlapping histological features. Melanomas are characterised by the presence of multiple genomic copy number variants (CNVs), while this is not a feature of naevi. We assessed the feasibility and utility of array-based comparative genomic hybridisation (aCGH) to assess CNVs in melanocytic lesions. DNA was extracted from formalin fixed, paraffin embedded (FFPE) sections of unambiguous naevi (n=19) and melanomas (n=19)...
March 5, 2017: Pathology
https://www.readbyqxmd.com/read/28270196/two-cases-of-perivascular-epithelioid-cell-tumor-of-the-uterus-clinical-radiological-and-pathological-diagnostic-challenge
#10
Byung Su Kwon, Dong Soo Suh, Nam Kyung Lee, Yong Jung Song, Kyung Un Choi, Ki Hyung Kim
BACKGROUND: Perivascular epithelioid cell tumor (PEComa) is a rare subtype of mesenchymal origin tumor composed of epithelioid cells which exhibits immunohistochemical co-expressions of melanocytic markers and smooth muscle markers. CASE PRESENTATION: In the first case, malignant uterine PEComa with vaginal and multiple lung metastasis was misdiagnosed preoperatively as uterine leiomyosarcoma despite a preoperative punch biopsy and immunohistochemical analysis of the metastatic vaginal mass...
March 7, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28252554/clinical-and-dermoscopic-features-of-truly-amelanotic-plantar-melanoma
#11
Vincenzo De Giorgi, Alessia Gori, Imma Savarese, Antonietta D'Errico, Federica Papi, Marta Grazzini, Federica Scarfì, Piero Covarelli, Daniela Massi
Currently, there are no specific clinical and dermoscopic features for diagnosing truly amelanotic plantar melanoma (TAPM). The present study aimed to investigate the dermoscopic features of all clinical variants of TAMPS and to evaluate their histopathological correlations. A retrospective analysis of prospectively collected data was carried out during a 10-year period (2003-2013). We analyzed the clinical data of 1321 patients, who had received a histological diagnosis of melanoma at the Melanoma Unit of the University of Florence...
March 1, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28248717/mass-spectrometry-imaging-can-distinguish-on-a-proteomic-level-between-proliferative-nodules-within-a-benign-congenital-nevus-and-malignant-melanoma
#12
Rossitza Lazova, Zhe Yang, Constantin El Habr, Young Lim, Keith Adam Choate, Erin H Seeley, Richard M Caprioli, Li Yangqun
Histopathological interpretation of proliferative nodules occurring in association with congenital melanocytic nevi can be very challenging due to their similarities with congenital malignant melanoma and malignant melanoma arising in association with congenital nevi. We hereby report a diagnostically challenging case of congenital melanocytic nevus with proliferative nodules and ulcerations, which was originally misdiagnosed as congenital malignant melanoma. Subsequent histopathological examination in consultation by one of the authors (R...
February 20, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28248716/intraepithelial-melanoma-in-the-stomach-after-treatment-with-immune-checkpoint-blockade-therapy
#13
Elina Shustef, Carlos A Torres-Cabala, Jonathan L Curry, Michael T Tetzlaff, Priyadharsini Nagarajan, Doina Ivan, Victor G Prieto, Phyu P Aung
Melanoma is the most common tumor to metastasize to the gastrointestinal tract, commonly affecting the small intestine, colon, and anorectum. Primary mucosal melanoma can arise in any gastrointestinal site, most frequently affecting anorectal mucosa. Melanoma involving the gastric mucosa, specifically, is exceedingly rare and carries a poor prognosis with a median survival of 5 months. The presence of atypical melanocytes exclusively within gastric epithelium has not been previously described. We report a case of a 52-year-old man with widespread BRAFV600E mutant metastatic melanoma who was referred to our institution for immune checkpoint antibody-blockade therapy...
February 23, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28247923/regulatory-t-cell-cytokines-in-patients-with-nonsegmental-vitiligo
#14
Mehtap Kidir, Ayse A Karabulut, Mustafa E Ercin, Pınar Atasoy
In the etiopathogenesis of vitiligo, the role of suppressor cytokines, such as transforming growth factor-β (TGF-β) and interleukin-10 (IL-10), associated with regulatory T-cells (Treg) is not completely known. In this study, the role of Treg-cell functions in the skin of patients with nonsegmental vitiligo was investigated. Lesional and nonlesional skin samples from 30 adult volunteers ranging in age from 18 to 36 years with nonsegmental vitiligo were compared with normal skin area excision specimens of 30 benign melanocytic nevus cases as controls...
March 1, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28245942/clinical-markers-of-vitiligo-activity
#15
Laila Benzekri, Yvon Gauthier
BACKGROUND: Current modalities of understanding disease state (active/stable) are limited when considering treatment of vitiligo. OBJECTIVE: We sought to develop a rapid, accurate, and noninvasive assessment of vitiligo state. METHODS: In daylight and Wood's light examinations, 2 common clinical types of vitiligo were identified as amelanotic with sharply demarcated borders and hypomelanotic with poorly defined borders. Photographs were taken at the time of examination and a skin biopsy at the edge of a vitiligo lesion was performed...
February 25, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28243497/dermoscopic-and-confocal-features-of-an-axillary-special-site-nevus
#16
Riana Dutt, Harold S Rabinovitz, Rajendra Singh, Alon Scope
"Nevi of special sites" is a term that denotes melanocytic nevi presenting in specific anatomic locations including the scalp, genital area, flexural sites, and acral sites [1]. Nevi from these anatomic sites display at times histopathologic features that may lead the reading pathologist to recommend re-excision of these benign nevi. Reflectance confocal microscopy (RCM) is a noninvasive imaging tool that allows for visualization of epidermal, dermal-epidermal junctional (DEJ), and superficial dermal tissue structures at cellular level resolution...
January 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/28243496/reflectance-confocal-microscopy-features-of-facial-angiofibromas
#17
José-Francisco Millán-Cayetano, Oriol Yélamos, Anthony M Rossi, Michael A Marchetti, Manu Jain
Facial angiofibromas are benign tumors presenting as firm, dome-shaped, flesh-colored to pink papules, typically on the nose and adjoining central face. Clinically and dermoscopically they can mimic melanocytic nevi or basal cell carcinomas (BCC). Reflectance confocal microscopy (RCM) is a noninvasive imaging tool that is useful in diagnosing melanocytic and non-melanocytic facial lesions. To date no studies have described the RCM features of facial angiofibromas. Herein, we present two cases of facial angiofibromas that were imaged with RCM and revealed tumor island-like structures that mimicked BCC, leading to skin biopsy...
January 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/28239913/-sky-full-of-stars-pattern-dermoscopic-findings-in-a-desmoplastic-giant-congenital-melanocytic-nevus
#18
Pablo Martín-Carrasco, José Bernabeu-Wittel, Javier Dominguez-Cruz, Teresa Zulueta Dorado, Julian Conejo-Mir Sanchez
Desmoplastic giant congenital melanocytic nevus (DGCN) is an uncommon variant of congenital nevus, presenting as a progressive induration and hypopigmentation of the lesion that occasionally causes hair loss and even total or partial disappearance of the nevus. A 6-month-old girl with a giant congenital melanocytic nevus that involved the entire posterior side of the right thigh was seen in our department. Nine months later, the peripheral area of the nevus presented as a marked induration with hypopigmentation...
February 27, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28237771/-primary-intramedullary-melanoma-case-report-and-literature-review
#19
Yislenz Narváez-Martínez, Napoleón de la Ossa, Raquel López-Martos, Carlos Cohn-Reinoso, Marina Castellví-Juan, Secundino Martin-Ferrer
A dark pigmented intramedullary mass is very rarely encountered in daily practice, and poses a diagnostic challenge. Several entities have to be considered, including melanin-containing tumours (melanotic ependymoma and melanotic schwannoma) and melanocyte-containing tumours (melanocytoma, primary melanoma and melanoma metastases). The case is presented of a 47 year-old male with a pigmented intramedullary tumour located at T7-T8 level. Magnetic resonance images (MRI) revealed a tumour with hyperintensity on T1 and hypointensity on T2...
February 22, 2017: Neurocirugía
https://www.readbyqxmd.com/read/28225968/atypical-cellular-blue-nevus-or-malignant-blue-nevus
#20
Luise Ribeiro Daltro, Lygia Bertalha Yaegashi, Rodrigo Abdalah Freitas, Bruno de Carvalho Fantini, Cacilda da Silva Souza
Blue nevus is a benign melanocytic lesion whose most frequent variants are dendritic (common) blue nevus and cellular blue nevus. Atypical cellular blue nevus presents an intermediate histopathology between the typical and a rare variant of malignant blue nevus/melanoma arising in a cellular blue nevus. An 8-year-old child presented a pigmented lesion in the buttock since birth, but with progressive growth in the last two years. After surgical excision, histopathological examination revealed atypical cellular blue nevus...
January 2017: Anais Brasileiros de Dermatologia
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