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S Topin-Ruiz, J-M Debarre, E Blanchard, S Kettani, P-J Valmier, L Martin, Y Le Corre
BACKGROUND: Circumscribed palmar hypokeratosis (CPH) is a rare skin disease, first described in 2002, associated with sudden localized reduction of the corneal layer. In most cases, it presents as an isolated rounded erythematous palmar lesion on the thenar eminence. We describe the dermoscopic semiology of CPH in 3 cases. PATIENTS AND METHODS: Three patients between the ages of 59 and 72 presented very limited erythematous lesions suggestive of CPH. Dermoscopic examination of these lesions provided similar findings...
October 19, 2016: Annales de Dermatologie et de Vénéréologie
Meng-Jie Zhao, Bilal Abdul-Fattah, Xiao-Ying Qu, Cui-Yan Wang, Xia Wang, Yi Ran, Ting Lai, Si-Yuan Chen, Chang-Zheng Huang
INTRODUCTION: Mycosis fungoides (MF) is the most common form of primary cutaneous T cell lymphoma. Narrowband ultraviolet B light (NBUVB) is used increasingly in treating MF because of its good toleration and well-established management. CONCERNS: To discuss the risk factors and underlying pathogenic factors in the patients with secondary skin diseases after NBUVB therapy. METHODS: We report in details the first case of a patient with MF accompanied with actinic keratosis (AK), AK with squamous cell carcinoma (SCC) transformation and porokeratosis after NBUVB therapy...
October 2016: Medicine (Baltimore)
Enzo Errichetti, Giuseppe Stinco
Over the last few years, dermoscopy has been shown to be a useful tool in assisting the noninvasive diagnosis of various general dermatological disorders. In this article, we sought to provide an up-to-date practical overview on the use of dermoscopy in general dermatology by analysing the dermoscopic differential diagnosis of relatively common dermatological disorders grouped according to their clinical presentation, i.e. dermatoses presenting with erythematous-desquamative patches/plaques (plaque psoriasis, eczematous dermatitis, pityriasis rosea, mycosis fungoides and subacute cutaneous lupus erythematosus), papulosquamous/papulokeratotic dermatoses (lichen planus, pityriasis rosea, papulosquamous sarcoidosis, guttate psoriasis, pityriasis lichenoides chronica, classical pityriasis rubra pilaris, porokeratosis, lymphomatoid papulosis, papulosquamous chronic GVHD, parakeratosis variegata, Grover disease, Darier disease and BRAF-inhibitor-induced acantholytic dyskeratosis), facial inflammatory skin diseases (rosacea, seborrheic dermatitis, discoid lupus erythematosus, sarcoidosis, cutaneous leishmaniasis, lupus vulgaris, granuloma faciale and demodicidosis), acquired keratodermas (chronic hand eczema, palmar psoriasis, keratoderma due to mycosis fungoides, keratoderma resulting from pityriasis rubra pilaris, tinea manuum, palmar lichen planus and aquagenic palmar keratoderma), sclero-atrophic dermatoses (necrobiosis lipoidica, morphea and cutaneous lichen sclerosus), hypopigmented macular diseases (extragenital guttate lichen sclerosus, achromic pityriasis versicolor, guttate vitiligo, idiopathic guttate hypomelanosis, progressive macular hypomelanosis and postinflammatory hypopigmentations), hyperpigmented maculopapular diseases (pityriasis versicolor, lichen planus pigmentosus, Gougerot-Carteaud syndrome, Dowling-Degos disease, erythema ab igne, macular amyloidosis, lichen amyloidosus, friction melanosis, terra firma-forme dermatosis, urticaria pigmentosa and telangiectasia macularis eruptiva perstans), itchy papulonodular dermatoses (hypertrophic lichen planus, prurigo nodularis, nodular scabies and acquired perforating dermatosis), erythrodermas (due to psoriasis, atopic dermatitis, mycosis fungoides, pityriasis rubra pilaris and scabies), noninfectious balanitis (Zoon's plasma cell balanitis, psoriatic balanitis, seborrheic dermatitis and non-specific balanitis) and erythroplasia of Queyrat, inflammatory cicatricial alopecias (scalp discoid lupus erythematosus, lichen planopilaris, frontal fibrosing alopecia and folliculitis decalvans), nonscarring alopecias (alopecia areata, trichotillomania, androgenetic alopecia and telogen effluvium) and scaling disorders of the scalp (tinea capitis, scalp psoriasis, seborrheic dermatitis and pityriasis amiantacea)...
September 9, 2016: Dermatology and Therapy
John Verrinder Veasey, Monique Coelho Dalapicola, Rute Facchini Lellis, Adriana Bittencourt Campaner, Thiago da Silveira Manzione, Maria Clarissa de Faria Soares Rodrigues
Porokeratosis is a disorder of epidermal keratinization characterized clinically by a distinctive ridge-like border, and histologically by cornoid lamellae. The known clinical variants of porokeratosis are: classic porokeratosis of Mibelli, disseminated superficial (actinic) porokeratosis (DSAP), porokeratosis palmaris et plantaris disseminata, linear porokeratosis and punctate porokeratosis. In 1995, a seventh form was described as porokeratosis ptychotropica: a verrucous form resembling psoriasis involving the gluteal cleft presenting on the histological exam multiple cornoid lamellae...
July 2016: Anais Brasileiros de Dermatologia
Satish Udare, Karishma Hemmady
A dermatoscope is an important tool in a dermatologist's armamentarium as it can eliminate the need for a biopsy in a wide array of conditions. Porokeratosis was described by Mibelli and Respighi in 1893, as a disorder of keratinization which on the basis of distribution patterns was described as five clinical variants that portrayed a coronoid lamella on histopathology. We describe a case of asymptomatic, long-standing palmar and plantar pits, which on dermatoscopy showed features suggestive of porokeratosis, which was later reconfirmed by histopathologic sections...
July 2016: Indian Dermatology Online Journal
Tania Salas, Jesus Hernandez-Gil, Alicia Lopez, Maria Dorado, Javier Ruiz, Esther García, Francisco Martinez
No abstract text is available yet for this article.
August 8, 2016: Dermatologic Therapy
Georgi Tchernev, Anastasiya Atanasova Chokoeva, Bogdana Ivanova, Hristo Mangarov, Nadezhda Georgieva Vidolova
Porokeratosis is defined as a disorder of keratinization characterized by one or more atrophic patches surrounded by a clinically and histologically distinctive hyperkeratotic ridgelike border called the cornoid lamella. Lesions are most commonly located on the sun-exposed sides of trunk and extremities, while exclusive facial involvement has been also reported. Despite that the exact risk of cutaneous malignancy developing in porokeratosis is unknown, it is confirmed by series of case reports, including squamous cell carcinoma, basal cell carcinoma and even melanoma...
July 28, 2016: Wiener Medizinische Wochenschrift
Guoqiang Zhang, Mingyuan Ren, Si Li, Lu Zhao, Yi Cheng, Yuangzhu Lin, Shunqiang Gao
No abstract text is available yet for this article.
August 2016: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
M Li, Z Li, J Wang, C Ni, Z Sun, N J Wilson, J Zhang, F Chen, X Li, X Du, H Yu, L Zhang, F J D Smith, G Zhang, Z Yao
BACKGROUND: Porokeratosis (PK, MIM 175800) is a chronic autosomal dominant cutaneous keratinization disorder, which has a wide variety of clinical manifestations. OBJECTIVES: We analysed the molecular basis of 10 families and 12 sporadic cases with different subtypes of porokeratosis in the Chinese population. METHODS: Genomic DNA was extracted from peripheral blood samples. Mutation screening was performed by direct sequencing of exons and flanking intron-exon boundaries for the entire coding region of four mevalonate pathway genes and SLC17A9 gene...
September 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
G Kravvas, D Veitch, H Fawcett, C B Bunker
No abstract text is available yet for this article.
August 2016: Clinical and Experimental Dermatology
Rajesh Kumar Mandal, Anupam Das, Piyush Kumar
No abstract text is available yet for this article.
June 7, 2016: Indian Journal of Dermatology, Venereology and Leprology
M Sommerlad, A Lock, G Moir, J McGregor, R Bull, R Cerio, C Harwood
Porokeratosis is a clonal epidermal disorder of keratinisation characterised by annular lesions with an atrophic centre and a hyperkeratotic edge. The cornoid lamella is the histopathological hallmark. Five clinical variants are recognised: porokeratosis of Mibelli, disseminated superficial porokeratosis (DSP), disseminated superficial actinic porokeratosis (DSAP), porokeratosis plantaris, palmaris et disseminate (PPPD), punctuate porokeratosis and linear porokeratosis. Linear porokeratosis is the type most frequently associated with malignant transformation into squamous cell carcinoma (SCC)...
April 18, 2016: British Journal of Dermatology
Jiuxiang Wang, Ying Liu, Fei Liu, Changzheng Huang, Shanshan Han, Yuexia Lv, Chun-Jie Liu, Su Zhang, Yayun Qin, Lei Ling, Meng Gao, Shanshan Yu, Chang Li, Mi Huang, Shengjie Liao, Xuebin Hu, Zhaojing Lu, Xiliang Liu, Tao Jiang, Zhaohui Tang, Huiping Zhang, An-Yuan Guo, Mugen Liu
Disseminated superficial porokeratosis (DSP) is a rare keratinization disorder of the epidermis. It is characterized by keratotic lesions with an atrophic center encircled by a prominent peripheral ridge. We investigated the genetic basis of DSP in two five-generation Chinese families with members diagnosed with DSP. By whole-exome sequencing, we sequencing identified a nonsense variation c.412C > T (p.Arg138*) in the phosphomevalonate kinase gene (PMVK), which encodes a cytoplasmic enzyme catalyzing the conversion of mevalonate 5-phosphate to mevalonate 5-diphosphate in the mevalonate pathway...
2016: Scientific Reports
Laura Gray Pruitt, Ling-Lun Bob Hsia, William A Burke
No abstract text is available yet for this article.
September 2015: JAAD Case Reports
Nicole Umanoff, Ari Fisher, J Andrew Carlson
BACKGROUND: Wong-type dermatomyositis (DM) exhibits simultaneous pityriasis rubra pilaris (PRP) features. CASE REPORT: A 50-year-old woman presented with a heliotrope rash, Gottron's papules, and a poikilodermic, erythematous rash in shawl distribution without evidence of muscle weakness. Despite topical corticosteroids, the eruption progressed 9 months later to include generalized hyperkeratotic follicular papules, islands of sparing, and atrophic macules with a collarette of scale suggestive of porokeratosis...
January 2015: Dermatopathology (Basel, Switzerland)
Basak Yalcin, Pinar I Uysal, Elcin Kadan, Önder Bozdoğan
Porokeratosis includes a group of heterogenous disorders that represents distinct clinical subtypes of the same genetic pattern. Although entire pathogenesis of porokeratosis still remains unknown, certain factors including ultraviolet radiation and immunosuppression are suggested to be some of the factors inducing this disorder. Eruptive disseminated porokeratosis is a recently described form of porokeratosis, which frequently occurs in the presence of immunosuppresion or malignancy. The authors report here a unique case with sudden onset eruptive disseminated porokeratosis associated with diabetes mellitus...
August 2016: American Journal of Dermatopathology
Caitlyn Reed, Raveena Reddy, Robert T Brodell
Porokeratosis of Mibelli (PM) is a rare condition with the potential for malignant transformation that presents a clinical and pathologic diagnostic challenge. An improperly oriented biopsy may lead to the wrong histopathologic diagnosis. We report a case of PM that was previously misdiagnosed and describe a biopsy technique for suspected PM that maximizes the potential for histopathologic confirmation of the diagnosis.
March 2016: Cutis; Cutaneous Medicine for the Practitioner
A Nicola, J Magliano
We present a series of 6 cases of disseminated superficial actinic porokeratosis and describe their dermoscopic features. Dermoscopy is a noninvasive in vivo technique that is useful as a tool for the diagnosis and follow-up of porokeratosis. This condition has specific dermoscopic features that were observed in our series of cases and that are consistent with reports in the international literature.
March 22, 2016: Actas Dermo-sifiliográficas
N Quiroz-Valencia, M J Vargas Bermudez
No abstract text is available yet for this article.
March 21, 2016: Actas Dermo-sifiliográficas
Etan Marks, Olena Dorokhova, Bijal Amin, Mark Jacobson
Porokeratosis and angiokeratomas are both seen in the setting of chronic graft-versus-host-disease (GVHD), but rarely occur together. We present a case of a patient with lichen planus-like (LPL) and sclerodermatous chronic GVHD manifesting after allogeneic bone marrow transplant with concomitant eruptive angiokeratomas and porokeratosis.
March 9, 2016: Journal of Cutaneous Pathology
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