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Spitz nevus

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https://www.readbyqxmd.com/read/29314193/acral-pigmented-spitz-nevus-in-a-child-with-transepidermal-migration-of-melanocytes-dermoscopic-and-reflectance-confocal-microscopic-features
#1
Christopher Iriarte, Babar Rao, Attiya Haroon, Anna Yasmine Kirkorian
Acral pigmented Spitz nevi are seldom reported in the literature. We report a new case on the palm of a 4-year-old girl that demonstrated correlation between features observed on dermoscopy and reflectance confocal microscopy (RCM). Histopathology revealed a benign intraepidermal Spitz nevus with transepidermal elimination of melanocytes that showed on RCM as focal atypical bright cells concerning for malignancy. This case is one of few reports in the literature combining dermoscopy, reflectance confocal microscopy, and histology for an acral Spitz nevi, which are rarely evaluated by RCM given the thickness of the stratum corneum in acral sites...
January 4, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29210482/genomic-analysis-of-a-case-of-agminated-spitz-nevi-and-congenital-pattern-nevi-arising-in-extensive-nevus-spilus
#2
Caitlin Porubsky, Jamie K Teer, Yonghong Zhang, Maria Deschaine, Vernon Sondak, Jane L Messina
Nevus spilus is a melanocytic neoplasm characterized by a tan macular background punctuated by multiple hyperpigmented macules or papules that represent various types of nevi. These include junctional and compound nevi, Spitz nevi, and rarely blue nevi. We report a unique case of widespread, multiple nevi spili giving rise to agminated Spitz nevi and congenital-pattern compound nevi that underwent genetic analysis to further characterize the mutational profile of this rare entity.
December 6, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29165834/juvenile-xanthogranuloma-with-angiomatous-appearance-and-a-peculiar-immunophenotype
#3
Joaquín López-Robles, Lucía Núñez, Elena Macias-Del-Toro, José Luis Ramírez-Bellver, José Luis Díaz, Luis Requena
Juvenile xanthogranuloma is the most common form of non-Langerhans cell histiocytosis in childhood. The clinical differential diagnosis of a solitary juvenile xanthogranuloma includes molluscum contagiosum, Spitz nevus, and melanoma. Lesions larger than 2 cm in diameter may be misdiagnosed as hemangiomas, but this is not typical of smaller juvenile xanthogranuloma. We report a case of solitary juvenile xanthogranuloma in a 10-year-old boy with angiomatous appearance and peculiar immunophenotype.
November 22, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/29150877/patients-with-spitz-nevi-in-the-greek-population-epidemiologic-clinical-and-histopathological-characteristics
#4
Efthymia Soura, Amerini Dimitrakopoulou, Erietta Christofidou, Alexander Katoulis, Christina Antoniou, Alexander Stratigos
BACKGROUND: Spitz nevi may present with clinical and histopathological atypical features that do not affect patient prognosis, but may become worrisome for patients ≥40 years presenting with newly appearing SN. OBJECTIVE: Patient characteristics and sun behavior patterns were investigated in correlation with age. SN characteristics and histopathological attributes were also investigated in correlation with age. METHODS: Patients with histopathologicaly confirmed diagnosis of SN were invited for a clinical examination...
November 17, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29134183/pigmented-spindle-cell-nevus-of-reed-of-the-eyelid
#5
Melina I Morkin, Mitesh K Kapadia, Nora V Laver
Purpose: To report the clinical, pathological, and immunohistochemical features of the first pigmented spindle cell nevus (PSCN) of Reed documented to have appeared in the eyelid. Methods: The findings of clinical and histopathological examination are presented, along with differential diagnoses and a review of the pertinent literature. Case: A 3-year-old boy presented with a rapidly growing, heavily pigmented left lower lid papule raising the concern of malignancy, warranting excisional biopsy...
September 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28977136/the-fast-clinical-evolution-of-a-spitz-nevus-three-year-follow-up-of-a-child
#6
Maria Cristina Pedrazini, Victor Angelo Martins Montalli, Elemir Macedo de Souza
OBJECTIVE: To report the clinical evolution and handling of a Spitz nevus, from its initial flat feature to becoming an irregular, nodular, reddish lesion. CASE DESCRIPTION: Female child, phototype II, with a small congenital nevus on the left lower limb and other sustained small nevi. The patient went through annual clinical and dermoscopic evaluations between the ages of three and seven, period during which the nevi located on the left thigh grew rapidly. The clinical hypothesis was Spitz nevus, with indication of surgical removal with a safety margin and anatomopathological study...
September 21, 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28862772/parallel-ridge-dermoscopic-pattern-in-plantar-atypical-spitz-nevus
#7
R Jurakić Tončić, M Bradamante, G Ferrara, D Štulhofer-Buzina, M Petković, G Argenziano
Clinicopathological classification, diagnosis and management of spitzoid melanocytic lesion presents one of the most intriguing issues in dermatopathology (1,2). No single clinicopathological feature can offer reliable differentiation of Spitz nevus and melanoma. Although not all the experts agree with the concept of Spitzoid neoplasms as a morpho-biological spectrum, there is a four-tiered classification system proposed by Da Forno et al. and encompassing: 1) Spitz nevus; 2) atypical Spitz nevus; 3) (atypical) Spitz tumor; 4) Spitzoid melanoma (1,3)...
September 1, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28796000/genomic-analysis-of-pigmented-epithelioid-melanocytomas-reveals-recurrent-alterations-in-prkar1a-and-prkca-genes
#8
Jarish N Cohen, Nancy M Joseph, Jeffrey P North, Courtney Onodera, Artur Zembowicz, Philip E LeBoit
Pigmented epithelioid melanocytoma (PEM) is a rare cutaneous melanocytic tumor first described as epithelioid blue nevus in patients with the Carney Complex (CC). PEM was among the first established examples of an intermediate class of melanocytic tumors, including atypical Spitz tumors, with frequent metastasis to lymph nodes but only rare extranodal spread. Sporadic and CC-associated PEM are essentially histologically indistinguishable. A subset of PEM shows loss of cytoplasmic expression of the protein kinase A regulatory subunit alpha (PRKAR1A), a tumor suppressor gene mutated in 70% of families with CC...
October 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28664989/evolution-of-spitz-nevi
#9
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/28657121/differential-ube2c-and-hoxa1-expression-in-melanocytic-nevi-and-melanoma
#10
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
https://www.readbyqxmd.com/read/28648937/the-correlation-of-the-standard-5-probe-fish-assay-with-melanocytic-tumors-of-uncertain-malignant-potential
#11
Aaron Muhlbauer, Shabnam Momtahen, Martin C Mihm, James Wang, Cynthia M Magro
BACKGROUND: FISH has recently emerged as a technique to better assess the malignant potential of histologically ambiguous melanocytic lesions. However, the usefulness of FISH has not been conclusively established. The purpose of this study was to further explore the diagnostic value of FISH in distinguishing the borderline melanocytic tumor (BMT) from melanoma. METHOD: 73 cases with BMT were analyzed retrospectively from a dermatopathology database between 2010-2015...
June 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28631119/-expression-of-cancer-testis-ct-antigens-in-pediatric-and-adolescent-melanomas
#12
REVIEW
N Behrendt, T Schultewolter, K Busam, D Frosina, G Spagnoli, A Jungbluth
BACKGROUND: One of the main problems in the diagnostics of pediatric melanomas is the differentiation from benign dermal lesions typical for this age group, such as Spitz nevus. The biological behavior of pediatric melanomas differs considerably from that of melanomas in adults. MATERIAL AND METHODS: Cancer testis (CT) antigens are named after their typical expression pattern since they are present in various types of malignant tumors but in normal adult tissues are solely expressed in testicular germ cells...
July 2017: Der Pathologe
https://www.readbyqxmd.com/read/28528541/melanoma-frequency-among-symmetrical-spitzoid-looking-lesions-a-retrospective-study
#13
Claudia Costa, Matteo Megna, Milena Cappello, Maddalena Napolitano, Giuseppe Monfrecola, Massimiliano Scalvenzi
BACKGROUND: Many efforts have been spent attempting to define clinical, histopathological and molecular markers for differential diagnosis of Spitz nevus and melanoma. Dermoscopy has been widely used but it may be not always sufficient. METHODS: A retrospective study was performed evaluating Spitzoid-looking lesions showing symmetry at clinical and dermoscopic examination in patients ≥ 12 years attending our Clinic from 2004 to 2014. Demographic, clinical and dermoscopic data were assessed for each lesion in order to highlight the most common characteristics which could help the differential diagnosis between Spitz nevus and melanoma when clinical or dermoscopic asymmetry is lacking...
May 16, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28509525/melanoma-frequency-among-symmetrical-spitzoid-looking-lesions-a-retrospective-study
#14
Claudia Costa, Matteo Megna, Milena Cappello, Maddalena Napolitano, Giuseppe Monfrecola, Massimiliano Scalvenzi
BACKGROUND: Many efforts have been spent attempting to define clinical, histopathological and molecular markers for differential diagnosis of Spitz nevus and melanoma. Dermoscopy has been widely used but it may be not always sufficient. METHODS: A retrospective study was performed evaluating Spitzoid-looking lesions showing symmetry at clinical and dermoscopic examination in patients ≥ 12 years attending our Clinic from 2004 to 2014. Demographic, clinical and dermoscopic data were assessed for each lesion in order to highlight the most common characteristics which could help the differential diagnosis between Spitz nevus and melanoma when clinical or dermoscopic asymmetry is lacking...
May 16, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28475519/genomic-assessment-of-blitz-nevi-suggests-classification-as-a-subset-of-blue-nevus-rather-than-spitz-nevus-clinical-histopathologic-and-molecular-analysis-of-18-cases
#15
Maria C Isales, Alexandra M Haugh, Jeffrey Bubley, Anna E Verzì, Bin Zhang, Emily Kudalkar, Christina Y Lee, Pedram Yazdan, Joan Guitart, Pedram Gerami
Blitz nevi/tumors are a distinct subset of melanocytic neoplasia which show mixed morphologic features of Spitz and blue nevus. Genomically, most blue nevi have GNAQ or GNA11 mutations while most Spitzoid neoplasms have either an HRAS mutation or translocations involving MET, ROS, BRAF, ALK1, NTRK1, and RET. The criteria used for the assessment of malignancy in blue and Spitzoid lesions are different, and these lesions have different prognostic markers. In this study, we assess the clinical, morphological, and genomic changes in 18 cases of Blitz nevi/tumors to better characterize this subset of neoplasms and determine their optimal genomic classification...
April 27, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28447351/estimating-melanin-location-in-the-pigmented-skin-lesions-by-hue-saturation-lightness-color-space-values-of-dermoscopic-images
#16
REVIEW
Hiroshi Sakai, Yoshimi Ando, Kuniko Ikinaga, Masaru Tanaka
The depth of melanin in the skin can be estimated roughly by observation of the color exhibited on dermoscopy. Currently, there are no objective methods to estimate it. The aim of the present study was to clarify the relationship between the depth of melanin in the skin and the color variation exhibited, and to objectively estimate the 3-D location of melanin in the pigmented skin lesions from dermoscopic images. Representative colors in dermoscopic images of acral compound nevus, Spitz nevus and blue nevus were evaluated by the subjectively perceived color on dermoscopy and objective values in hue-saturation-lightness color space values...
May 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28407793/the-diagnosis-and-management-of-the-spitz-nevus-in-the-pediatric-population-a-systematic-review-and-meta-analysis%C3%A2-protocol
#17
Jean Abboud, Michael Stein, Michele Ramien, Claudia Malic
BACKGROUND: Spitz nevi are uncommon melanocytic neoplasms found in children. Historically, the diagnosis and management of these tumors has lacked consensus among oncologists, pathologists, plastic surgeons, and dermatologists. Once interpreted and treated as a "juvenile melanoma", many have argued for the benignancy of such tumors in certain patient age groups, encouraging a conservative approach. The lack of consensus surrounding the diagnosis and perceived malignant potential of these tumors has led physicians to approach them on a case-by-case basis and institutional protocols...
April 13, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28398920/spitz-nevus-intermingling-with-hemangioma-angiomatoid-spitz-nevus-angiotropism-and-vascular-co-option-viewed-with-differing-availability-heuristics
#18
Thomas N Helm, Klaus F Helm
No abstract text is available yet for this article.
March 16, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28394801/myxoid-spitz-nevi-report-of-6-cases
#19
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/28362709/a-diagnostic-algorithm-combining-immunohistochemistry-and-molecular-cytogenetics-to-diagnose-challenging-melanocytic-tumors
#20
Sylvia Redon, Briac Guibourg, Matthieu Talagas, Pascale Marcorelles, Arnaud Uguen
Some melanocytic tumors are diagnostic challenges and require ancillary tools in helping the pathologists to determine their potential of malignancy. We intend to propose a diagnostic algorithm in helping to classify challenging melanocytic tumors combining histology, immunohistochemistry, and cytogenetics. We report on 24 spitzoid and/or misdiagnosed melanocytic tumors studied with a triple p16, Ki-67, and HMB45 immunohistochemistry score, fluorescent in situ hybridization (FISH) with melanoma-dedicated and non-melanoma-dedicated probes and comparative genomic hybridization on DNA microarray (CGH array)...
March 30, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
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