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Seborrheic keratosis

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https://www.readbyqxmd.com/read/28447350/dermoscopy-pathology-relationship-in-seborrheic-keratosis
#1
REVIEW
Akane Minagawa
Making a definitive diagnosis of seborrheic keratosis (SK) can be challenging for the naked eye due to its wide variation in clinical features. Fortunately, however, most cases of SK exhibit the typical dermoscopic findings of fissures and ridges, hairpin vessels with white halo, comedo-like openings, and milia-like cysts, all of which are helpful to distinguish SK from melanoma, melanocytic nevus, squamous cell carcinoma, basal cell carcinoma (BCC) and other skin tumors. Histopathologically, these dermoscopic characteristics correspond to papillomatous surface of the epidermis, enlarged capillaries of the dermal papillae, pseudohorn cysts in the epidermis opened to the surface of the lesion and intraepidermal cysts, respectively...
May 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28410231/genetic-alterations-in-seborrheic-keratoses
#2
Barbara Heidenreich, Evygenia Denisova, Sivaramakrishna Rachakonda, Onofre Sanmartin, Timo Dereani, Ismail Hosen, Eduardo Nagore, Rajiv Kumar
Seborrheic keratoses are common benign epidermal lesions that are associated with increased age and sun-exposure. Those lesions despite harboring multiple somatic alterations in contrast to malignant tumors appear to be genetically stable. In order to investigate and characterize the presence of recurrent mutations, we performed exome sequencing on DNA from one seborrheic keratosis lesion and corresponding blood cells from the same patients with follow up investigation of alterations identified by exome sequencing in 24 additional lesions from as many patients...
March 30, 2017: Oncotarget
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
#3
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/28370387/spindle-cell-squamous-cell-carcinoma-arising-in-bowen-s-disease-case-report-and-review-of-the-published-work
#4
Toshiaki Kogame, Hirotsugu Tanimura, Sei Nakamaru, Kaoru Makimura, Hiroyuki Okamoto, Takahiro Kiyohara
A 79-year-old Japanese woman presented with an ulcerated, brown-red nodule in the center of a sharply demarcated, tan-brown plaque situated on the left side of her right breast. Histologically, the plaque demonstrated an acanthosis with an intraepidermal epithelioma of Borst-Jadassohn. Small oval nests of bland-appearing basophilic cells in the periphery gradually enlarged into nests of various sizes and irregular shapes, composed of densely cohesive, atypical basophilic cells above the central nodule. The atypical keratinocytes shifted to atypical spindle cells beneath the acanthotic epidermis, penetrating deep into the subcutaneous tissue...
March 31, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28358590/cellulitis-secondary-to-liquid-nitrogen-cryotherapy-case-report-and-literature-review
#5
Christina M Huang, Emily Y Lu, Mark G Kirchhof
BACKGROUND: Liquid nitrogen cryotherapy is a commonly used technique to treat a wide variety of dermatologic conditions including actinic keratoses, non-melanoma skin cancers, verrucae, and seborrheic keratoses. The risks associated with liquid nitrogen cryotherapy are important to know and discuss with patients prior to treatment. OBJECTIVE: We report a case of cellulitis secondary to liquid nitrogen cryotherapy for actinic keratosis. We sought to review the literature for an estimate of secondary infection rates following cryotherapy treatment...
March 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28355453/dermoscopic-clues-for-diagnosing-melanomas-that-resemble-seborrheic-keratosis
#6
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/28341252/correlation-between-digital-epiluminescence-microscopy-parameters-and-histopathological-changes-in-lentigo-maligna-and-solar-lentigo-a-dermoscopic-index-for-the-diagnosis-of-lentigo-maligna
#7
Giorgio Annessi, Riccardo Bono, Damiano Abeni
BACKGROUND: The clinical and dermoscopic differentiation between lentigo maligna (LM) and solar lentigo (SL)/initial seborrheic keratosis (SK) may be difficult. OBJECTIVE: Our aim was to identify digital epiluminescence microscopy (DELM)-specific criteria that can be helpful in distinguishing LM from SL/SK and to propose a new model of LM dermoscopic progression based on a study of DELM-histopathological correlation. METHODS: A total of 167 consecutive doubtful pigmented lesions of the head (105 LM and 62 SL/SK) were studied...
February 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28329637/dermatological-screening-of-an-elderly-population-the-rotterdam-study
#8
Martijn G H Sanders, Joris A C Verkouteren, Luba M Pardo
BackgroundThe recent WHO burden of disease project showed that the non-fatal skin disease related burden is high, but also that prevalence rates of many common skin diseases are not well documented. The aim of this study is to give an overview of (untreated) skin diseases in a population based sample of elderly.MethodsIn 2010, a full body skin examination (FBSE) was embedded in the Rotterdam Study, a prospective population based cohort study of an elderly white-skinned population in the Netherlands. The examination was conducted by a dermatology-trained physician and focused on most common skin diseases (e...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329595/pigmented-lesion-of-the-nipple-a-clinicopathological-challenge
#9
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/28272654/multiple-pigmented-seborrheic-keratosis-with-sebaceous-differentiation-a-case-report
#10
R Vimal Chander, P Jajaganesh, Ganthimathy Sekhar, S Chitra
Seborrheic keratosis is a benign lesion that is common in the trunk and head and neck regions. It shows a considerable variety of histological appearances leading to different variants. The presence of sebaceous differentiation in seborrheic keratosis is very rare and can histologically mimic benign and malignant tumors with sebaceous differentiation. We present a case of a 65-year-old male presenting with multiple nodules over the right and left sides of neck and the right preauricular region, histopathological examination of which revealed multiple pigmented seborrheic keratoses with sebaceous differentiation...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28270317/white-papules-on-the-backs-of-a-middle-aged-man-and-his-son
#11
Fiona Fang, Dustin Larsen, Barbara Wilson
A middle-aged man came in for evaluation of "white spots" on his upper body. The number of lesions had increased progressively over the past 20 years but were asymptomatic. The patient expressed concern that his young son had recently developed similar lesions on the upper part of his back. Physical examination revealed numerous, slightly elevated, flat-topped papules scattered over the back, chest, and upper extremities (Figure 1). Each 4- to 6-mm papule was oval or round, ivory white, with a cobblestone surface...
2017: Skinmed
https://www.readbyqxmd.com/read/28238461/-increased-glucose-uptake-by-seborrheic-keratosis-on-pet-scan
#12
C Merklen-Djafri, P Truntzer, S Hassler, B Cribier
BACKGROUND: Positron emission tomography (PET) is an examination based upon the uptake of a radioactive tracer by hypermetabolic cells. It is primarily used in tandem with tomodensitometry (PET-TDM) for cancer staging because of its high sensitivity and specificity for the detection of metastases. However, unusually high uptake may occur with benign tumours, including skin tumours. Herein, we report an extremely rare case of pathological uptake levels resulting from seborrhoeic keratosis...
February 23, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28162852/the-role-of-immunosuppression-in-squamous-cell-carcinomas-arising-in-seborrheic-keratosis
#13
Ruzica Z Conic, Karl Napekoski, Heidi Schuetz, Melissa Piliang, Wilma Bergfeld, Natasha Atanaskova Mesinkovska
BACKGROUND: Seborrheic keratoses (SK) are common skin neoplasms considered to be benign. Reports of associated squamous cell carcinoma arising within seborrheic keratosis (SCC-SK) have been described. OBJECTIVE: To describe the histopathologic characteristics of SCC-SK and identify predisposing factors in formation of these rare lesions. METHODS: There were 162 cases of SCC-SK in a span of a decade (2003-2014). All of the histopathologic specimens and medical records were reviewed...
February 2, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28132411/a-case-report-of-disappearing-pigmented-skin-lesions-associated-with-pembrolizumab-treatment-for-metastatic-melanoma
#14
Z J Wolner, A A Marghoob, M P Pulitzer, M A Postow, M A Marchetti
Pembrolizumab is an immune checkpoint inhibitor that targets the programmed cell death (PD)-1 receptor. Common cutaneous adverse side effects of PD-1 inhibitors include maculopapular rash, pruritus, vitiligo, and lichenoid skin and mucosal reactions. Here, we describe a man in his sixties with metastatic melanoma treated with pembrolizumab who subsequently developed fading or disappearance of pigmented skin lesions, lightening of the skin, and poliosis of the eyebrows, eyelashes, and scalp and body hair. Compared to baseline high-resolution three-dimensional total body photography, we observed fading or disappearing of solar lentigines, seborrheic keratoses, and melanocytic naevi, suggesting that PD-1 inhibitors may affect the evolution of these benign skin lesions...
January 28, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28107605/creating-immunocompromised-districts
#15
K Ramey, J Ibrahim, R T Brodell
We read the letter to the editor, Viral warts and seborrheic keratosis on tattoos: a review of 9 cases with great interest.(1) Dermatologists see only what they know! Once we recognized the possibility that warts might grow preferentially in black and blue tattoo dye, we collected 7 cases over a 10-year period from one solo private practice. In this report, a patient with a pre-existing viral wart on skin adjacent to a new tattoo appears to have preferentially spread onto the immunocompromised district (Ruocco, 2009)(2) created by black ink nanoparticles...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28107597/viral-warts-and-seborrheic-keratoses-on-tattoos-a-review-of-9-cases
#16
Nicolas Kluger
We wish to add to the recent article by Ramley et al(1) our experience on 8 cases of viral warts and one case of seborrheic keratosis (SK) on tattoos. Those cases were collected with the help of dermatologists and family doctors between 2007 and 2016. We reviewed the demographic data, delay of onset after tattooing, clinical presentation and outcomes whenever possible. The number of lesions was counted manually from the available pictures. This article is protected by copyright. All rights reserved.
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28105724/intraepidermal-proliferation-of-merkel-cells-within-a-seborrheic-keratosis-merkel-cell-carcinoma-in-situ-or-merkel-cell-hyperplasia
#17
Jeanne McFalls, Lauren Okon, Sarah Cannon, Jason B Lee
Intradepidermal proliferation of Merkel cells without any dermal component has been interpreted as either a hyperplastic process secondary to chronic ultraviolet radiation or a neoplastic process, namely Merkel cell carcinoma (MCC) in situ. The recent criteria that have been proffered to diagnose MCC in situ, unfortunately, are identical to those that have been applied to Merkel cell hyperplasia in the past, posing a diagnostic quandary when faced with an intraepidermal proliferation of Merkel cells. Most previously reported cases of MCC in situ have occurred within associated epithelial lesion that includes solar (actinic) keratosis and squamous-cell carcinoma in situ...
January 20, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27990390/nekam-s-disease
#18
Chintaginjala Aruna, D V S B Ramamurthy, T Neelima, Haritha Bandaru
Keratosis lichenoides chronica also known as Nekam's disease is a rare mucocutaneous disorder, characterized clinically by asymptomatic violaceous keratotic papules arranged in linear, reticular, or plaque form usually on the trunk and extremities and histologically by interface dermatitis. The disease is considered rare with only 128 cases being reported in the literature till date and very few from India. We report a case of a 40-year-old man who presented with constellation of features of lichen planus, seborrheic dermatitis, and apthous ulcers, which upon workup was found to be Nekam's disease...
November 2016: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/27922892/galectin-3-expression-in-benign-and-malignant-skin-diseases-with-epidermal-hyperplasia
#19
Ze-Xin Jiang, Guo-Zhen Tan, Zhen-Rui Shi, Yu-Ping Zhang, Yan-Fang Han, Liangchun Wang
Galectin-3 has been suggested relative to tumor genesis, progression, and metastasis in basal cell carcinoma and squamous cell carcinoma that are the most common skin cancers characterized by malignant epidermal proliferation. In this study, we evaluated galectin-3 expression in seborrheic keratosis, keratoacanthoma, and infectious diseases including verruca vulgaris, condyloma acuminatum, and chromoblastomycosis that are pathologically featured by benign epidermal proliferation. Galectin-3 expression was shown by immunohistochemical staining and quantified using the Image Pro Plus V6...
November 7, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27904179/a-clinicopathological-and-dermoscopic-correlation-of-seborrheic-keratosis
#20
Geethu Francis Alapatt, D Sukumar, M Ramesh Bhat
BACKGROUND: Seborrheic keratosis (SK) is the most common benign epidermal tumor of the skin. Even though SK has been well characterized clinically, dermoscopically, and histopathologically, data regarding clinical dermoscopic and histopathological correlation of different types of SK are inadequate. AIM: We carried out this study to establish any correlation between the clinical, dermoscopic, and histopathological appearance of SK and its variants. METHODS: This was a descriptive study...
November 2016: Indian Journal of Dermatology
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