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Keratoacanthoma

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https://www.readbyqxmd.com/read/29884163/shisha-use-among-students-in-a-private-university-in-kigali-city-rwanda-prevalence-and-associated-factors
#1
Omoboriowo Joad Omotehinwa, Ogendi Japheths, Iyamuremye Jean Damascene, Michael Habtu
BACKGROUND: All over the globe shisha smoking is fast growing among different age brackets. Shisha use has been reported to be increasing among youths in African major cities. Its use is documented to result in health effects such as lung cancer, cardiovascular and respiratory conditions, periodontal diseases, keratoacanthoma which are also associated with cigarette smoking. In Kigali, Rwanda's capital, reports indicate that shisha use is increasing among the youths, particularly the university students...
June 8, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29799076/t-lymphocyte-profiles-differ-between-keratoacanthomas-and-invasive-squamous-cell-carcinomas-of-the-human-skin
#2
Corinne Bauer, Ashik Ahmed Abdul Pari, Viktor Umansky, Jochen Utikal, Petra Boukamp, Hellmut G Augustin, Sergij Goerdt, Cyrill Géraud, Moritz Felcht
BACKGROUND: T-lymphocytes are involved in tumor progression and regression. Actinic keratoses (AK) are atypical proliferations of keratinocytes of the skin. Some AK progress into invasive cutaneous squamous cell carcinomas (cSCC). Keratoacanthomas (KA) are either classified as a cSCC subtype or a benign tumor with histologic resemblance to well-differentiated cSCC as it is supposed to regress spontaneously. In contrast, cSCC represent malignant tumors that may metastasize. OBJECTIVES: To compare the T-lymphocyte profiles of AK, KA and cSCC in relation to PD-L1 expression...
May 24, 2018: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29770284/solitary-palmar-keratoacanthoma-case-report
#3
Raghavendra L Girijala, Young Kwak, David Wright, Leonard H Goldberg
Keratoacanthoma (KA) is a squamous neoplasm exhibiting a triphasic growth pattern involving rapid growth, stabilization, and eventual spontaneous resolution. Historically, keratoacanthomas were thought to originate on hair-bearing skin or sun-exposed surfaces. However, recent reports demonstrate that they can occur on the mucous membranes, subungual regions, and palms and soles. We report a 74-year-old man who developed a KA on the left palmar surface after minor trauma, for which he underwent Mohs' micrographic surgery...
March 15, 2018: Curēus
https://www.readbyqxmd.com/read/29718441/prevalence-and-molecular-characteristics-of-dna-mismatch-repair-protein-deficient-sebaceous-neoplasms-and-keratoacanthomas-in-a-japanese-hospital-based-population
#4
Kouki Kuwabara, Okihide Suzuki, Noriyasu Chika, Kensuke Kumamoto, Toshiharu Minabe, Tomoo Fukuda, Eiichi Arai, Jun-Ichi Tamaru, Kiwamu Akagi, Hidetaka Eguchi, Yasushi Okazaki, Hideyuki Ishida
Background: Muir-Torre syndrome (MTS) is currently considered as a clinical variant of Lynch syndrome (LS). The clinical significance of the screening of patients with MTS-associated cutaneous tumors for the identification of LS has not yet been established. In addition, the prevalence and molecular characteristics of mismatch repair (MMR) protein deficiency in such tumors has scarcely been investigated in the Japanese population. Methods: Immunohistochemistry (IHC) for MMR proteins (MLH1, MSH2, MSH6 and PMS2) was performed in formalin-fixed paraffin-embedded sections prepared from 16 sebaceous neoplasms (SNs) resected from 13 patients and 32 keratoacanthomas (KAs) resected from 31 patients at our institution between January 2005 and March 2014...
April 28, 2018: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29706031/mohs-micrographic-surgery-for-nail-unit-tumors-an-update-and-a-critical-review-of-the-literature
#5
REVIEW
M Lambertini, B M Piraccini, P A Fanti, E Dika
Mohs micrographic surgery (MMS) is a good treatment option for epithelial neoplasms, especially when localized in areas where tissue conservation is crucial, such as the nail unit (NU). MMS is a method of radical excision offering high cure rates due to the margin control and functional preservation. Our aim is to provide a review on the use of MMS for the treatment of the most common nail tumors. We revised the current literature on the use of MMS to treat malignant neoplasms (Bowen's disease, squamous cell carcinoma, melanoma, basal cell carcinoma, keratoacanthoma, carcinoma cuniculatum) and benign neoplasms (onychomatricoma and glomus tumor)...
April 28, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29697422/keratoacanthomatous-changes-unifying-the-histologic-spectrum-of-actinic-granuloma
#6
Jennifer N Harb, Jessica E Kalen, Sylvia Hsu, Abdul Hafeez Diwan, Antoanella Calame, Kiran Motaparthi
Actinic granuloma (AG) manifests as annular plaques on sun-damaged skin. There remains no universal consensus on the nosology, etiology, or clinicopathologic criteria of AG as a distinct entity. Broadly, AG is characterized by granulomatous inflammation, multinucleated giant cells, elastophagocytosis, and the absence of mucin and necrobiosis. It is not uncommon, however, to encounter overlapping histological features of other granulomas, such as granuloma annulare and necrobiosis lipoidica, confounding the diagnosis of this controversial entity...
April 24, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29665030/dermatologic-toxicity-from-novel-therapy-using-antimicrobial-peptide-ll-37-in-melanoma-a-detailed-examination-of-the-clinicopathologic-features
#7
Tsetan Dolkar, Celestine M Trinidad, Kelly C Nelson, Rodabe N Amaria, Priyadharsini Nagarajan, Carlos A Torres-Cabala, Doina Ivan, Victor G Prieto, Michael T Tetzlaff, Jonathan L Curry, Phyu P Aung
LL-37 is a naturally occurring 37-amino-acid peptide that is part of the innate immune system in human skin. Preclinical studies have showed that intra-tumoral injections of LL-37 stimulate the innate immune system by activation of plasmacytoid dendritic cells, which mediate tumor destruction. LL-37 intra-tumoral injections have been utilized in a phase 1 clinical trial for melanoma patients with cutaneous metastases. We report dermatologic toxicity in a 63-year-old woman with stage IIIC melanoma of the right calf and inguinal lymph nodes...
April 17, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29650817/-iii-diagnosis-and-management-of-keratoacanthoma
#8
Toshihiro Takai
No abstract text is available yet for this article.
April 2018: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29610614/topical-imiquimod-5-as-a-treatment-option-in-solitary-facial-keratoacanthoma
#9
Goran Pancevski, Senada Pepic, Sanela Idoska, Gligor Tofoski, Suzana Nikolovska
BACKGROUND: Keratoacanthoma (KA) is a rapidly growing epithelial tumour with histopathologic and clinical features similar to squamous cell carcinoma (SCC) and a certain tendency toward spontaneous regression. CASE PRESENTATION: This article presents a unique and rare case of keratoacanthoma arising from the upper lip of a young male patient. These two features are in contrast to most of the reported cases in elder male individuals and on the lower lip. Relevant management protocol of the case has also been discussed...
March 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29578429/keratoacanthoma-of-the-upper-lip-review-of-the-literature-and-report-of-case-with-central-upper-lip-reconstruction
#10
A Goldman, U Wollina
Keratoakanthoma (KA) is a common non-melanoma skin tumor of sun-exposed skin. Recently it has been classified as a highly differentiated squamous cell carcinoma, based on the evidence of local destruction, tissue invasion and malignant transformation with metastatic spread described in the medical literature. Lower lip KA is not uncommon on lower lip, and quite rare on upper lip. The authors present a case of 78-year-old Caucasian male patient with a rapidly growing keratotic tumor of the central region of upper lip...
February 2018: Georgian Medical News
https://www.readbyqxmd.com/read/29577263/multiple-keratoacanthoma-and-oral-lichen-planus-successfully-treated-with-systemic-retinoids-and-review-of-multiple-keratoacanthoma-associated-with-lichen-planus
#11
Shiyu Zhang, Dawei Han, Tao Wang, Yuehua Liu
No abstract text is available yet for this article.
March 25, 2018: International Journal of Dermatology
https://www.readbyqxmd.com/read/29574930/multicentric-cutaneous-keratoacanthomas-in-a-free-living-marmoset-callithrix-sp
#12
J Díaz-Delgado, T C Sanches, C S Cirqueira, A A C Coimbra, J M Guerra, V Olivares, C Di Loretto, R A Ressio, S Iglezias, N C C A Fernandes, C Kanamura, K R Groch, J L Catão-Dias
Cutaneous neoplasia is common in non-human primates. We describe the gross and microscopic features of multicentric cutaneous keratoacanthomas in a free-living marmoset (Callithrix sp.). Immunohistochemistry for human papillomavirus and herpes simplex virus type I and simplex virus type II was negative. Keratoacanthomas should be included in the differential diagnosis for cutaneous masses in non-human primates.
June 2018: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29537445/intralesional-and-laser-assisted-5-fluorouracil-in-dermatologic-disease-a-systematic-review
#13
Garrett T Prince, Michael C Cameron, Ramin Fathi, Theodore Alkousakis
INTRODUCTION: 5-fluorouracil has proven to be an effective therapy in the treatment of a variety of dermatologic conditions. Approved by the United States Food and Drug Administration for the topical treatment of actinic keratoses and superficial basal cell carcinoma, 5-fluorouracil has also demonstrated efficacy in the treatment of a variety of other dermatologic diseases. While best known for its use as a topical medication, 5-fluorouracil can also be delivered intralesionally for the treatment of dermatologic disease...
March 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29477665/adjuvant-vemurafenib-in-resected-braf-v600-mutation-positive-melanoma-brim8-a-randomised-double-blind-placebo-controlled-multicentre-phase-3-trial
#14
Michele Maio, Karl Lewis, Lev Demidov, Mario Mandalà, Igor Bondarenko, Paolo A Ascierto, Christopher Herbert, Andrzej Mackiewicz, Piotr Rutkowski, Alexander Guminski, Grant R Goodman, Brian Simmons, Chenglin Ye, Yibing Yan, Dirk Schadendorf
BACKGROUND: Systemic adjuvant treatment might mitigate the high risk of disease recurrence in patients with resected stage IIC-III melanoma. The BRIM8 study evaluated adjuvant vemurafenib monotherapy in patients with resected, BRAFV600 mutation-positive melanoma. METHODS: BRIM8 was a phase 3, international, double-blind, randomised, placebo-controlled study that enrolled 498 adults (aged ≥18 years) with histologically confirmed stage IIC-IIIA-IIIB (cohort 1) or stage IIIC (cohort 2) BRAFV600 mutation-positive melanoma that was fully resected...
April 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29459852/%C3%AE-hpv-infection-correlates-with-early-stages-of-carcinogenesis-in-skin-tumors-and-patient-derived-xenografts-from-a-kidney-transplant-recipient-cohort
#15
Cinzia Borgogna, Carlotta Olivero, Simone Lanfredini, Federica Calati, Marco De Andrea, Elisa Zavattaro, Paola Savoia, Elena Trisolini, Renzo Boldorini, Girish K Patel, Marisa Gariglio
Many malignancies that occur in high excess in kidney transplant recipients (KTRs) are due to viruses that thrive in the setting of immunosuppression. Keratinocyte carcinoma (KC), the most frequently occurring cancer type in KTR, has been associated with skin infection by human papillomavirus (HPV) from the beta genus. In this report, we extend our previous investigation aimed at identifying the presence of active β-HPV infection in skin tumors from KTRs through detection of viral protein expression. Using a combination of antibodies raised against the E4 and L1 proteins of the β-genotypes, we were able to visualize infection in five tumors [one keratoacanthoma (KA), three actinic keratoses (AKs), and one seborrheic keratoses (SKs)] that were all removed from two patients who had been both transplanted twice, had developed multiple KCs, and presented with a long history of immunosuppression (>30 years)...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29447627/lynch-syndrome-and-muir-torre-syndrome-an-update-and-review-on-the-genetics-epidemiology-and-management-of-two-related-disorders
#16
REVIEW
Stephanie Le, Umer Ansari, Aisha Mumtaz, Kunal Malik, Parth Patel, Amanda Doyle, Amor Khachemoune
Hereditary Nonpolyposis Colorectal Cancer (HNPCC), also known as Lynch Syndrome, is an autosomal dominant, tumor predisposing disorder usuallycaused by germline mutations in mismatch repair (MMR) genes. A subset of HNPCC, Muir-Torre Syndrome (MTS) also involves MMR gene defects and is generally accepted as a variant of HNPCC. MTS is typicallycharacterized by at least one visceral malignancy and one cutaneous neoplasm of sebaceous differentiation, with or without keratoacanthomas. In either version of the disorder, nonfunctional MMR systems lead tothe loss of genomic integrity, marked commonly by mismatches in repetitive DNA sequences, resulting in microsatellite instabilities...
November 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29418015/inverted-follicular-keratoses-of-the-buttocks
#17
Marie Kenney, Elizabeth B Lester, Deborah L Cook
No abstract text is available yet for this article.
May 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29369392/cutaneous-intravascular-cd30-t-cell-pseudolymphoma-occurring-in-a-regressing-keratoacanthoma
#18
A Kailas, D M Elston, S E Crater, C A Cerruto
Cutaneous intravascular CD30+ pseudolymphoma is an uncommon incidental finding that may mimic intravascular or angiotropic lymphoma. We describe a 78-year-old female with a traumatized regressing keratoacanthoma on her left cheek. A shave biopsy was performed which revealed intravascular staining of atypical lymphocytes positive for CD45, CD3 and CD30. Clinical exam revealed no other evidence of lymphoma, the patient denied constitutional symptoms, and routine blood work was normal. The patient is healthy and doing well 28 months after her first visit...
January 25, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29368221/successful-treatment-of-a-keratoacanthoma-with-electrochemotherapy-a-case-report
#19
Paola Pasquali, Enrico P Spugnini, Alfonso Baldi
INTRODUCTION: Few studies have evaluated the efficacy of intralesional bleomycin injection combined with electroporation for the treatment of cutaneous tumors. However, the phenomenon that electroporation can enhance the cytotoxicity of bleomycin in vivo by 300-700 fold has been intensely investigated. CASE PRESENTATION: Keratoacanthoma in an 86-year-old patient was treated with intralesional bleomycin combined with electroporation. Treatment consisted of local application of shorty and intense electric pulses followed by local injection of bleomycin...
January 24, 2018: Dermatology and Therapy
https://www.readbyqxmd.com/read/29333623/evaluation-of-universal-immunohistochemical-screening-of-sebaceous-neoplasms-in-a-service-setting
#20
K Schon, E Rytina, J Drummond, J Simmonds, S Abbs, R Sandford, M Tischkowitz
BACKGROUND: Muir-Torre syndrome (MTS) is a subtype of Lynch syndrome, which encompasses the combination of sebaceous skin tumours or keratoacanthomas and internal malignancy, due to mutations in DNA mismatch repair genes. Sebaceous neoplasms (SNs) may occur before other malignancies, and may lead to the diagnosis, which allows testing of other family members, cancer surveillance, risk-reducing surgery or prevention therapies. AIM: To evaluate the efficacy of universal immunohistochemistry (IHC) screening of SNs in a service setting...
January 14, 2018: Clinical and Experimental Dermatology
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