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basal cell skin cancer

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https://www.readbyqxmd.com/read/28641234/improved-boundary-segmentation-of-skin-lesions-in-high-frequency-3d-ultrasound
#1
B Sciolla, P Delachartre, L Cowell, T Dambry, B Guibert
In this article, we propose a segmentation algorithm for skin lesions in 3D high-frequency ultrasound images. The segmentation is done on melanoma and Basal-cell carcinoma tumors, the most common skin cancer types, and could be used for diagnosis and surgical excision planning in a clinical context. Compared with previously proposed algorithms, which tend to underestimate the size of the lesion, we propose two new boundary terms which provide significant improvements of the accuracy. The first is a probabilistic boundary expansion (PBE) term designed to broaden the segmented area at the boundaries, which uses the feature asymmetry criterion...
June 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28638810/common-malignant-cutaneous-conditions-among-albinos-in-kenya
#2
Seyed Emad Emadi, Andrew Juma Suleh, Farhang Babamahmoodi, Fatemeh Ahangarkani, Vanessa Betty Chelimo, Beatrice Mutai, Seyyed Reza Raeeskarami, Alireza Ghanadan, Seyed Naser Emadi
Background: Albinos in Africa are at constant risk of developing skin cancer due to the damage caused by ultra-violet exposure. This study identifies the common skin conditions among albinos in Kenya as a country located along the equator. Methods: In this descriptive study on albino patients who were admitted to Mbagathi District Hospital in Nairobi, Kenya the census method was used for sampling and a total of 151 albinos were registered. All necessary data including age, gender, type, site and the number of skin lesions were recorded...
2017: Medical Journal of the Islamic Republic of Iran
https://www.readbyqxmd.com/read/28632797/approach-to-management-of-giant-basal-cell-carcinomas
#3
Sarah E Mott, William J Hunter, Edibaldo Silva, Christopher J Huerter
Basal cell carcinoma (BCC) is a common nonmelanoma skin cancer with increasing incidence in the United States and worldwide. It is strongly linked to UV radiation exposure and typically is slow growing. Malignancy in BCCs is due to local growth and invasion rather than metastasis, and the prognosis is generally favorable. We report the case of a 60-year-old man with a large, locally destructive giant BCC on the right side of the upper back that was successfully treated via complete surgical excision (SE) and did not recur in the subsequent 36 months...
May 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28632148/claw-foot-a-case-report
#4
Alessandro Innocenti, Francesco Ciancio, Cecilia Taverna, Sara Tanini, Aurelio Portincasa, Domenico Parisi, Marco Innocenti, Vincenzo De Giorgi
A cutaneous horn could be defined as a conical projection on the surface of skin made of cornified material and resembling an animal horn. These lesions most commonly affect light-skinned men aged between 50 to 89 years and usually appear in sun exposed areas. Radiation, chronic irritation and even human papilloma virus-2 infection may be precipitating factors. More than half of the cases originate from either malignant or premalignant lesions, therefore the base of the lesion must be carefully examined histologically...
June 8, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28631369/inoperable-infiltrative-basal-cell-carcinoma-successfully-treated-with-vismodegib
#5
Omid Zargari, Seyyede Zeinab Azimi, Siamak Geranmayeh
Basal cell carcinoma (BCC) is the most common skin cancer but usually has a good prognosis. However, there is a subset of BCC cases with a less favorable prognosis. For patients with locally advanced, recurrent or metastatic BCCs who are not suitable for surgery or radiotherapy, small-molecule drug inhibitors of hedgehog pathway are a new therapeutic opportunity. Here, we present a case of infiltrative BCC with multiple recurrences. Wide excision with reconstructive plastic surgery was performed initially with adjuvant radiotherapy...
June 19, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28619614/rapid-ex-vivo-examination-of-mohs-specimens-using-optical-coherence-tomography
#6
D Rashed, D Shah, A Freeman, R J Cook, C Hopper, C M Perrett
BACKGROUND: Mohs micrographic surgery (MMS) is an effective treatment for certain non-melanoma skin cancers. Optical coherence tomography (OCT) is a biomedical imaging modality that permits high-resolution imaging of the epidermis and dermis with the potential to detect both healthy tissue and tumour. OCT may also provide a means of detecting and differentiating between the various histological subtypes of basal cell carcinomas (BCC) in vivo. OBJECTIVE: The aim of this prospective ex vivo study was to evaluate the efficacy of OCT in recognising healthy and pathological margins of excised BCC lesions and detecting different BCC subtypes...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28609551/chronic-exposure-to-tetracyclines-and-subsequent-diagnosis-for-non-melanoma-skin-cancer-in-a-large-midwestern-u-s-patient-population
#7
P P Vakharia, B Nardone, B J Schlosser, D Lee, L Serrano, D P West
Tetracyclines (TCNs) are commonly used in the management of several chronic dermatological disorders, partly due to their affinity for inflamed skin tissue, as they are known to suppress cytokines including tumor necrosis factor-alpha and interleukin-6 that are typically involved in inflammatory skin disorders.(1) TCNs are known to be photoreactive following ultraviolet (UV) radiation exposure, a known risk factor for the development of nonmelanoma skin cancer (NMSC), notably basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)...
June 13, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28605380/establishment-of-a-clinic-based-biorepository
#8
Sarah E Belden, Chandana K Uppalapati, Agnes S Pascual, McKale R Montgomery, Kathryn J Leyva, Elizabeth E Hull, Richard L Averitte
The incidence of skin cancer (e.g., squamous cell carcinoma, basal cell carcinoma, and melanoma) has been increasing over the past several years. It is expected that there will be a parallel demand for cutaneous tumor samples for biomedical research studies. Tissue availability, however, is limited due the cost of establishing a biorepository and the lack of protocols available for obtaining clinical samples that do not interfere with clinical operations. A protocol was established to collect and process cutaneous tumor and associated blood and saliva samples that has minimal impact on routine clinical procedures on the date of a Mohs surgery...
May 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28591439/retrospective-evaluation-of-exposure-to-natural-uv-radiation-experiences-with-the-online-uv-history-tool-in-a-field-study
#9
Wobbeke Weistenhöfer, Julia Hiller, Hans Drexler, Johannes Kiesel
BACKGROUND: Cutaneous squamous cell carcinoma and multiple actinic keratoses can be recognized as occupational diseases if the site affected has been subjected to additional occupational UV exposure of at least 40 %. An online UV history tool that allows for the quantification of occupational and recreational UV doses was now tested in a field study. PATIENTS AND METHODS: Ninety-nine patients with nonmelanoma skin cancer were examined. Patient history with respect to UV exposure was obtained using the online UV history tool...
June 2017: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/28590951/cutaneous-squamous-cell-carcinoma-review-of-the-eighth-edition-of-the-american-joint-committee-on-cancer-staging-guidelines-prognostic-factors-and-histopathologic-variants
#10
Kiran Motaparthi, Jyoti P Kapil, Elsa F Velazquez
Cutaneous squamous cell carcinoma is the second most common form of nonmelanoma skin cancer after basal cell carcinoma and accounts for the majority of nonmelanoma skin cancer-related deaths. In 2017, the American Joint Committee on Cancer revised the staging guidelines of cutaneous squamous cell carcinoma to reflect recent evidence concerning high-risk clinicopathologic features. This update reviews the literature on prognostic features and staging, including the eighth edition of the American Joint Committee on Cancer Staging Manual...
July 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28584022/ikk%C3%AE-mediated-resistance-to-skin-cancer-development-is-ink4a-arf-dependent
#11
Angustias Page, Ana Bravo, Cristian Suárez-Cabrera, Josefa P Alameda, M LLanos Casanova, Corina Lorz, Carmen Segrelles, Jose C Segovia, Jesus M Paramio, Manuel Navarro, Angel Ramírez
IKKβ (encoded by IKBKB) is a protein kinase that regulates the activity of numerous proteins important in several signaling pathways, such as the nuclear factor kappa B (NF-κB) pathway. IKKβ exerts a pro-tumorigenic role in several animal models of lung, hepatic, intestinal and oral cancer. In addition, genomic and proteomic studies of human tumors also indicate that IKBKB gene is amplified or overexpressed in multiple tumor types. Here, the relevance of IKKβ in skin cancer was determined by performing carcinogenesis studies in animal models overexpressing IKKβ in the basal skin layer...
June 5, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28578364/xeroderma-pigmentosum-at-a-tertiary-care-center-in-saudi-arabia
#12
Lenah Alwatban, Yousef Binamer
BACKGROUND: Xeroderma pigmentosum (XP) is a rare autosomal recessive disorder caused by defective DNA repair that results in extreme sensitivity to ultraviolet (UV) rays. Depending on the type of XP, the disease may affect the skin, eyes and nervous system. OBJECTIVES: Describe the dermatologic manifestations in patients suffering from XP. DESIGN: Retrospective, descriptive review of medical records. SETTING: Dermatology clinic at tertiary care center in Riyadh...
May 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/28569867/optical-biopsy-approach-to-basal-cell-carcinoma-and-melanoma-based-on-all-optically-integrated-photoacoustic-and-optical-coherence-tomography
#13
Wangting Zhou, Zhongjiang Chen, Sihua Yang, Da Xing
Basal cell carcinoma (BCC) and melanoma (MM), with the highest morbidity and mortality, respectively, are considered as two skin cancers of concern in dermatology. Histological studies have demonstrated that vascular patterns and collagenous stroma serve as key parameters for BCC and MM classification. In this Letter, we sought to identify BCC and MM based on the dual parameters of vascular patterns and scattering structures provided by all-optically integrated photoacoustic and optical coherence tomography (AOPA/OCT)...
June 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28565875/smoothened-antagonist-gdc-0449-vismodegib-inhibits-proliferation-and-triggers-apoptosis-in-colon-cancer-cell-lines
#14
Chuanqing Wu, Shaobo Hu, Ji Cheng, Guobin Wang, Kaixiong Tao
The sonic hedgehog (Shh) pathway has been proven to be involved in embryonic development and cancer growth. GDC-0449, an antagonist of the hedgehog signaling receptor Smoothened (Smo), was recently approved by the US Food and Drug Administration as a prescription for skin basal cell carcinoma. However, the efficacy of GDC-0449 in the treatment of colon cancer and other malignancies, such as basal cell carcinoma and pancreatic cancer, has remained to be proven. The present study assessed the effect of GDC-0449 on the colon cancer cell lines Caco-2 and Ht-29...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28561682/advances-in-the-treatment-of-advanced-extracutaneous-melanomas-and-nonmelanoma-skin-cancers
#15
Kimberly M Komatsubara, Joanne Jeter, Richard D Carvajal, Kim Margolin, Dirk Schadendorf, Axel Hauschild
Cutaneous malignancies make up the greatest proportion of all human cancers and include melanomas as well as nonmelanoma skin cancers (NMSCs) such as basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (cSCC), as well as less common Merkel cell carcinoma (MCC), cutaneous lymphomas, cutaneous adnexal tumors, Kaposi sarcomas, and other sarcomas. Each of these NMSCs differ significantly in biology, clinical behavior, and optimal treatment recommendations from each other and from cutaneous melanoma...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28556451/skin-cancers-in-organ-transplant-recipients
#16
Amit Mittal, Oscar R Colegio
Long-term utilization of immunosuppression in organ transplant recipients (OTRs) leads to decreased immune-mediated tumor surveillance and development of malignant tumors. A delicate balance needs to be maintained in the intensity of immunosuppression to keep the risk of malignancy low without jeopardizing life-saving graft function. OTRs are prone to developing skin cancers which exhibit unique epidemiologic, pathophysiologic and prognostic characteristics. In this review, we discuss the most commonly reported skin cancers in OTRs: squamous cell carcinoma (SCC), basal cell carcinoma (BCC), Kaposi's sarcoma, Merkel cell carcinoma and malignant melanoma (MM)...
May 29, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28543586/multiple-skin-cancers-in-patients-with-mycosis-fungoides-after-long-term-ultraviolet-phototherapy
#17
K Imafuku, H Hata, T Yanagi, S Kitamura, Y Inamura-Takashima, M Nishimura, S Kitamura, S Moriwaki, H Shimizu
Phototherapy is a useful noninvasive therapy, but it can induce cutaneous malignant tumours, including squamous cell carcinoma (SCC) and basal cell carcinoma (BCC). We report on a 79-year-old man who had long-standing mycosis fungoides for 40 years, which had been treated with psoralen ultraviolet A therapy for 37 years at a dose of approximately 5000 J/cm(2) . Approximately 6 years before presentation, numerous types of cutaneous malignancies, including actinic keratosis, BCC and SCC, had begun to develop all over the patient's body...
July 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28538884/evaluation-of-surgical-margins-according-to-the-histological-type-of-basal-cell-carcinoma
#18
Charles Antonio Pires de Godoy, Alice Lima de Oliveira Neta, Sofia Silveira de Souza Leão, Raul Lima Dantas, Valeska Oliveira Fonseca Carvalho, Samuel Freire da Silva
Basal cell carcinoma is the most common skin cancer in the world. The aim of this study was to evaluate the surgical margin of basal cell carcinoma and correlate this with its histologic subtype. A retrospective analysis of pathology laboratory records from 1990 to 2000 was performed and the following data was collected: age, sex, race, anatomical location, histological type, and state of the excision margins in 1,428 histopathological reports of basal cell carcinoma. Ages ranged from 6 to 99 years, with an average of 57...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28538028/unnecessary-cost-of-post-mohs-permanent-pathology
#19
Kelly M MacArthur, Nikki Tang, George J Hruza, Timothy S Wang, Robert G Egbers
BACKGROUND: By providing tumor-free margins, Mohs micrographic surgery (MMS) results in high cure rates in the treatment of nonmelanoma skin cancers (NMSCs). However, when closure of the post-MMS defect is coordinated with reconstructive surgery, redundant tissue is sometimes submitted for permanent section evaluation. OBJECTIVE: The purpose of our study was to investigate the frequency and effect of this practice. MATERIALS AND METHODS: Patients (12 years and older) with NMSCs cleared by MMS with coordinated closures from 2014 to 2016 were identified...
May 22, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28528690/clinical-relevance-and-implications-of-hpv-induced-neoplasia-in-different-anatomical-locations
#20
REVIEW
Elena Sophie Prigge, Magnus von Knebel Doeberitz, Miriam Reuschenbach
Human papillomaviruses (HPV) are widespread DNA viruses that can infect epithelial cells of the skin and mucosa. Most HPV infections remain clinically unapparent and clear spontaneously. In few cases, however, HPV infections persist and can cause benign and malignant neoplasms at different anatomic locations. Malignant HPV-induced neoplasms are caused by distinct types of HPV (oncogenic or high-risk (HR) HPV types) and present in the anogenital (anus, penis, uterine cervix, vagina and vulva) and head and neck (particularly oropharynx) region...
April 2017: Mutation Research
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