References of "Arrese Estrada, Jorge"
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See detailNON-DERMATOPHYTE DERMATOSES MIMICKING DERMATOPHYTOSES IN HUMANS
Libon, Florence ULg; TASSOUDJI, Nazli ULg; DEZFOULIAN, Bita ULg et al

in Mycopathologia (2016)

Human dermatophytic cutaneous infections usually present as single or multiple slowly progressing annular erythemato-squamous lesions with a tendency to central healing on the hairless skin. In the ... [more ▼]

Human dermatophytic cutaneous infections usually present as single or multiple slowly progressing annular erythemato-squamous lesions with a tendency to central healing on the hairless skin. In the intertriginous regions (feet, inguinal, axillar, submammary), dermatophytic colonisations and infections manifest as whitish, slightly hyperkeratotic, pruritic and sometimes fissurated lesions. On the scalp, dermatophytic infections commonly lead to single or multiple more or less inflammatory and alopecic lesions. On the plantar and palmar aspects of the feet and hand, dermatophytosis presents as an eczema-like chronic dermatosis. Abscess-like lesions may occur due to zoophilic dermatomycosis. Dermatophytic infections of the nails reveal ill-defined whitish-yellowish colorations of the distal end or the lateral aspects of the nails, sometimes combined with partial nail embrittlement or even complete destruction. Despite the ubiquity of dermatophytic skin infections and their usually highly typical clinical features, a differential diagnosis has to be considered, in particular when treatment is not efficient or when treatment resistance occurs. This review presents the differential diagnosis in terms of frequency as well as the diagnostic methods permitting the distinction of annular, intertriginous, alopecic, palmoplantar, abscess-like and onychodystrophic lesions. [less ▲]

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See detailLocalized Eruptive Blue Nevi after Herpes Zoster
COLSON, Fany ULg; ARRESE ESTRADA, Jorge ULg; NIKKELS, Arjen ULg

in Case Reports in Dermatology (2016)

A 52-year-old White man presented with a dozen small, well-restricted, punctiform, asymptomatic, blue-gray macules on the left shoulder. A few months earlier, he had been treated with oral acyclovir for ... [more ▼]

A 52-year-old White man presented with a dozen small, well-restricted, punctiform, asymptomatic, blue-gray macules on the left shoulder. A few months earlier, he had been treated with oral acyclovir for herpes zoster (HZ) affecting the left C7–C8 dermatomes. All the blue macules appeared over a short period of time and then remained stable. The patient had not experienced any previous trauma or had tattooing in this anatomical region. The clinical diagnosis suggested blue nevi. Dermatoscopy revealed small, well-limited, dark-blue, compact, homogeneous areas evoking dermal blue nevi. An excisional biopsy was performed and the histological examination confirmed a blue nevus. As far as we are aware of, this is the first report of eruptive blue nevi following HZ, and it should be included in the differential diagnosis of zosteriform dermatoses responding to an isotopic pathway. In addition, a brief review concerning eruptive nevi is presented. [less ▲]

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See detailA One-year Survey of Microsporum audouinii infections in Belgium: epidemiological and genotypic characterisation
SACHELI, Rosalie ULg; ADJETEY BAHUN, Akolé ULg; DARFOUF, Rajae ULg et al

in Clinical Microbiology and Infection (2016), 22(3), 2859-28517

During recent years the proportion of tinea capitis (TC) infections due to Microsporum audouinii (M. audouinii) has increased both in Belgium and other European countries. To better understand the ... [more ▼]

During recent years the proportion of tinea capitis (TC) infections due to Microsporum audouinii (M. audouinii) has increased both in Belgium and other European countries. To better understand the emergence of this species in the country, the Belgian National Reference Center (NRC) for dermatophytes launched an epidemiological survey on the main anthropophilic dermatophytes causing TC in Belgium and including the genomic characterization of M. audouinii isolates. In total, 116 strains of M. audouinii were confirmed and characterized by the DiversiLab® system (bioMérieux). Six genotypic variants were identified, among which one major group included 90 isolates and the reference strain. Another variant group (11 strains) was exclusively confined to a geographical region in South Belgium. Analysis of epidemiological characteristics of the infected population showed that the main age category concerned 5-9 year-old children with a sex ratio (Male/Female) of 1.97. Data concerning the geographic origin of the family revealed a majority of Belgian nationality (44.7%), suggesting that the contamination has originated in Belgium. Other nationalities primarily originated from Africa. At this time, no clear correlation has been established between one particular strain and a specific country of origin. [less ▲]

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See detailMelanoma masquerading as nomelanocytic lesions
DETRIXHE, Audrey ULg; Libon, Florence ULg; MANSUY, Marion ULg et al

in Melanoma Research (2016)

Increased awareness among dermatologists as well as the development of dermoscopy and sequential dermoscopy have contributed significantly toward an increase in the diagnostic accuracy of pigmented ... [more ▼]

Increased awareness among dermatologists as well as the development of dermoscopy and sequential dermoscopy have contributed significantly toward an increase in the diagnostic accuracy of pigmented melanoma and even of amelanotic melanoma. However, the dermatologist's nightmare is the small group of melanomas that present as common skin diseases, often associated with a significant delay in diagnosis and hence a poor prognosis. The study was carried out to prospectively assess the number of melanomas lacking any clinical suspicion of melanoma and to describe their clinical and histological features over a 6-year observation period in an University Tertiary Skin Cancer Center. Out of 502 cases of newly diagnosed cases of melanoma, seven (1.4%) nonpigmented and nonamelanotic cases of melanoma were identified. The mean age of the patients was 69 years (two females/five males). All cases were discovered by chance on a punch biopsy. The clinical diagnostic suspicions were basal cell carcinoma, fungal intertrigo, keratoacanthoma, lichenoid keratoma, diabetic foot ulcer, eczema, and necrotic pressure ulcer. Dermoscopy, performed after the punch biopsies, was only partially contributive. The mean histological thickness was 2.7 mm, the mean number of mitoses was 7/mm, local micrometastases were present in 5/7 (71%), the mean Ki67 count was 18.9%, and a positive sentinel lymph node was observed in 4/6 (66%) cases. Nonpigmented and nonamelanotic melanomas are rare, are at high risk, and have a poor prognosis because of a delayed diagnosis. Dermoscopy is only of partial diagnostic aid. Treatment resistance or atypical behavior of the above-mentioned lesions should lead to biopsy. [less ▲]

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See detailLICHEN ET DERMATOSES LICHENOIDES - SPECTRE CLINIQUE ET BREF RAPPEL DE LA PRISE EN CHARGE
COLSON, Fany ULg; CAO, Sandrine ULg; MANSUY, Marion ULg et al

in SKIN (2016)

Bien connu dans sa forme typique, le lichen peut présenter des visages très variés dans ses formes atypiques (1-4). La reconnaissance de celles-ci est importante pour orienter le diagnostic et la prise en ... [more ▼]

Bien connu dans sa forme typique, le lichen peut présenter des visages très variés dans ses formes atypiques (1-4). La reconnaissance de celles-ci est importante pour orienter le diagnostic et la prise en charge. le mot lichen vient du Grec et signifie plante parasite. Le lichen a été décrit pour la première fois sous le nom de "lichen ruber" par Ferdinand Von Hebra en 1860. En effet, le réseau blanchâtre à la surface des lésions papuleuses ressemble au champignon lichen qui forme une symbiose avec un partenaire capable de photosynthèse (souvent une algue verte), généralement observée à la surface des rochers. L'appellation "lichen planus" a été proposée par Erasmus Wilson en 1866. Le lichen constitue le prototype de dermatoses lichénoïdes (Tableau 1). Ces maladies inflammatoires sont caractérisées, d'un point de vue clinique, par des lésions papuleuses et, d'un point de vue histologique, par un dense infiltrat lymphocytaire en bande dans le derme superficiel avec lésions des couches kératinocytaires inférieures de l'épiderme. [less ▲]

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See detailEpidemiological aspects and genotypic characterization of T.violaceum strains collected during a Belgian National survey on anthropophilic tinea
SACHELI, Rosalie ULg; Dekkers, Charlotte; GRAIDE, Hélène ULg et al

in Mycoses (2015, October), 58(Supplement 4), 189

Objectives The last two years, clinical cases of tinea capitis caused by Trichophyton violaceum (T. violaceum), have been identified in Belgium. To better understand the emergence of this species in the ... [more ▼]

Objectives The last two years, clinical cases of tinea capitis caused by Trichophyton violaceum (T. violaceum), have been identified in Belgium. To better understand the emergence of this species in the population, the Belgian National Reference Center (NRC Liège) launched a one-year national survey in 2013. Epidemiological aspects and genotypic characterization of the strains were included. Methods The study was conducted from March 2013 up to February 2014. All Belgian laboratories were asked to send M. audouinii and T. violaceum strains isolated from hair to the NRC with a form to fill in including epidemiological data. The fungal strains were identified by microscopy or ITS sequencing in case of doubtful identification. The genotypic analysis was performed by the DiversiLab® system (bioMérieux) for DNA fingerprinting and analysis. Epidemiological data were analyzed with the help of a biostatistician. Results Amongst the collected isolates, 23 strains were confirmed as T.violaceum (results concerning the 116 M. audouinii strains have already been reported). Analysis of the epidemiological characteristics of the infected population shows that the main age category concerns 0-4 year-old children (n=9, 39,1%) with a sex-ratio M/F of 1.875. Data concerning the geographic origin of the family were present in 82,6% of the cases and reveal that patients were mainly of Ethiopian origin (n=8, 57,9% of known cases). One patient was also from Burundi showing that T. violaceum strains probably circulate mainly in East Africa. The genotypic analysis led to the distinction of 2 variants of T. violaceum. The major group was composed of 17 strains which were mainly collected in the North of Belgium and included also the reference strain (18/23, 83,3%). The other group (6 strains) was close to the major group but the analysis of the spectral superposition showed some differences between these two groups, defining two distinct variants of T. violaceum in the Belgian population. This second variant was mainly recovered from South Belgium (5/6, 83,3%). No correlation could be made between the genotypic group and a particular ethnical origin as Ethiopian subjects were found in both groups. Conclusion The DiversiLab® system proved to be an efficient method to investigate the molecular epidemiology of dermatophytes infections as reported previously for M. audouinii. These results show that two distinct isolates co-exist in Belgium providing evidence of genetic heterogeneity and a possible spread of one genotypic variant in a restricted geographic area or the co-existence of two variants circulating in different African communities. However, no clear correlation could be established between the appartenance to a group and epidemiological factors, such as age or ethnical origin. [less ▲]

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See detailEpidemiological aspects and genotypic characterization of strains of Microsporum audouinii isolated in the context of a Belgian National survey on anthropophilic tinea
SACHELI, Rosalie ULg; Dekkers, Charlotte; DARFOUF, Rajae ULg et al

Poster (2015, May)

Objectives The last two years, clinical cases of tinea capitis caused by Microsporum audouinii (M. audouinii), have increased in Belgium. To better understand the emergence of this species in the ... [more ▼]

Objectives The last two years, clinical cases of tinea capitis caused by Microsporum audouinii (M. audouinii), have increased in Belgium. To better understand the emergence of this species in the population, the Belgian National Reference Center (NRC) for dermatophytes launched a national survey in 2013. Epidemiological aspects and genotypic characterization of the strains were included. Methods The study was conducted from March 2013 up to February 2014. All Belgian laboratories were asked to send M. audouinii strains isolated from hair to the NRC with a form to fill in including epidemiological informations. The fungal strains were identified by microscopy or ITS sequencing in case of doubt. The genotypic analysis was performed by the DiversiLab® system (bioMérieux) for DNA fingerprinting and analysis. Epidemiological informations were analyzed with the help of a biostatistician. Results Among the collected isolates, 117 strains have been currently confirmed as M. audouinii. Analysis of the epidemiological characteristics of the infected population shows that the main age category concerns 5-9 year-old children (64%, p< 0,0001) with a sex-ratio M/F of 1.97. Data concerning the geographic origin of the family have been obtained in only 33,6% of the cases. It reveals that strains have been mainly isolated from patients with a Belgian nationality (43,6%) suggesting bias in the data collection. The geographic origin of the remaining group includes several African countries such as Congo (20,61%), Guinea (12,8%) and Burundi (5,12%). The genotypic analysis led to the distinction of 6 genotypic variants of M. audouinii. One of these variants was exclusively recovered from South Belgium (11 strains). The major group was composed of 96 strains, well distributed in different Belgium locations. Two other groups of three strains each were close to the major group but the analysis of the spectral superposition showed some differences between these groups. The two last groups were clearly different from the major group but species identification was confirmed by ITS sequencing. Conclusion The results of the genomic analysis by Diversilab, show that several groups of M. audouinii isolates co-exist in Belgium providing evidence of genetic heterogeneity. However, no clear correlation could be established between the appartenance to a group and epidemiological factors, such as the age or ethnical origin. ________________________________________ [less ▲]

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See detailOnychomycoses : de la clinique au traitement
DETROUX, Valentine ULg; PAQUET, Philippe ULg; ARRESE ESTRADA, Jorge ULg et al

Article for general public (2015)

L'onychomycose est une pathologie très fréquente dont le traitement est particulièrement long et contraignant. Les agents pathogènes sont principalement les dermatophytes et parfois les moisissures non ... [more ▼]

L'onychomycose est une pathologie très fréquente dont le traitement est particulièrement long et contraignant. Les agents pathogènes sont principalement les dermatophytes et parfois les moisissures non dermatophytiques ainsi que les levures. La présentation clinique classique comporte une modification blanc jaunâtre de l'ongle. Le diagnostic différentiel avec les onychodystrophies non mycotiques n'est pas toujours aisé. L'infection fongique peut être confirmée par un examen direct (test à la potasse caustique, KOH) ou histologique (coloration au PAS) d'un prélèvement unguéal. La mise en culture permet ensuite l'identification du pathogène responsable. Plusieurs options thérapeutiques sont possibles en fonction de l'importance et du type d'onychomycose : antimycosiques topiques et/ou systémiques couplés ou non à l'avulsion chimique ou chirurgicale. De nouveaux traitements par laser, thérapie photodynaique ou iontophorèse complèteront probablement l'arsenal thérapeutique dans le futur [less ▲]

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See detailRecurrent In Situ Melanoma Successfully Treated with Ingenol Mebubate
MANSUY, Marion ULg; TASSOUDJI, Nazli ULg; ARRESE ESTRADA, Jorge ULg et al

in Dermatologic Therapy (2014)

Background:Treatment options for melanoma in situ (MIS) include imiquimod, radiation therapy, cryotherapy, excisional and Mohs surgery. Ingenol mebutate is a new topical treatment option recognized for ... [more ▼]

Background:Treatment options for melanoma in situ (MIS) include imiquimod, radiation therapy, cryotherapy, excisional and Mohs surgery. Ingenol mebutate is a new topical treatment option recognized for actinic keratosis. Although in vitro effectiveness has been demonstrated on melanoma cell lines, its therapeutic potential for in vivo melanomas is unknown. Case Report: In 2011, a 91-year-old woman presented a thick melanoma of her cheek. The lateral sections revealed persisting in situ melanoma, which were again excised. She presented for follow-up and a recurrent MIS was evidenced centered on the previous scar. She refused further surgery and ingenol mebutate (0.015% gel) was administered on three consecutive days. One month later, a complete clinical resolution was observed. Histology and immunohistology revealed no residual MIS. Conclusion: In this patient, ingenol mebutate was successful and well-tolerated as a topical, alternative therapy for MIS after failure of other treatment options. [less ▲]

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See detailEstablished and emerging oral antifungals in dermatology
PIERARD, Gérald ULg; PIERARD-FRANCHIMONT, Claudine ULg; Vroome, Valérie et al

in Dermatologic, Cosmeceutic, and Cosmetic Development (2013)

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See detailHERPES SIMPLEX VIRUS TYPE_i AND PYOGENIC GRANULOMA : A VASCULAR ENDOTHELIAL GROWTH FACTOR-MEDIATED ASSOCIATION?
EL HAYDERI, Lara ULg; PAUROBALLY, Dilshad ULg; FASSOTTE, Marie-France ULg et al

in Case Reports in Dermatology (2013), 5

Pyogenic granuloma (PG) is a vascular endothelial growth factor (VEGF)-related neoangiogenic process. Minor trauma, chronic irritation, certain drugs and pregnancy may favor PG. Viral triggers have not ... [more ▼]

Pyogenic granuloma (PG) is a vascular endothelial growth factor (VEGF)-related neoangiogenic process. Minor trauma, chronic irritation, certain drugs and pregnancy may favor PG. Viral triggers have not been reported up to date. A 52-year-old woman with hairly-cell leukemia presented because of a3-month history of a giant pseudotumoral lesion on her left cheek. All prior antibacterial, antifungal and anti-inflammatory treatments had failed. Histology revealed PG with sparse and isolated epithelial cell aggregates. Immunohistochemistry (IHC) identified herpes simplex virus type-I (HSV-I) antigens in the nuclei and cytoplasm of normal-appearing as well as cytopathic epithelial cells, suggesting a chronic, low-productive HSV infection. No HSV-I signal was evidenced in the endothelial cells of the PG. Furthermore, IHC revealed VEGF in the HSV-I infected epithelial cells as well as within the PG endothelial cells. These results incited oral treatment with valaciclovir, and the PG promptly resolved after 2 weeks. These findings suggest that a chronic HSV-I infection might play and indirect, partial role in neoangiogenesis, presumably via HSV-I infection-related stimulation of keratinocytic VEGF production. [less ▲]

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See detailPaclitaxel-Related Lymphedema and Scleroderma-Like Skin Changes
COLSON, Fany ULg; SIGHA, Berline; ARRESE ESTRADA, Jorge ULg et al

in Journal of Clinical Case Reports (2013), 3(11),

Paclitaxel is an antimucrotubule agent used for the treatment of metastatic breast cancer. The development of scleroderma-like skin changes is an exceptional adverse effect. We report two patients with ... [more ▼]

Paclitaxel is an antimucrotubule agent used for the treatment of metastatic breast cancer. The development of scleroderma-like skin changes is an exceptional adverse effect. We report two patients with metastatic breast cancer treated by paclitaxel who presented an enexplained unilateral lymphedema of the upper limb. Medical work-up did not demonstrate any mechanical or tumor obstruction of the lymphatic vessels. Dermatologic examination revealed cutaneous and bucutaneous indurations and hardening of certain areas of the involved arm. The clinical suspicion of scleroderma was confirmed by histology and immunohistology. Treatment was initiated with methotrexate and methylprednisolone, resulting in a clear reduction of the lymphedema and a regression of the scleroderma. These two cases suggest a pathogenic role of paclitaxel-induced scleroderma in the subsequent development of severe localized lymphedema. [less ▲]

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See detailMyxofibrosarcoma
CASTRONOVO, Charlotte ULg; ARRESE ESTRADA, Jorge ULg; QUATRESOOZ, Pascale ULg et al

in Rare Tumors (2013), 5(15), 60-61

Myxofibrosarcoma (MFS) is a variant of the group of malignant fibrous histiocytomas. It is one of the most aggressive types of soft tissue neoplasms. The clinical presentation is not pathognomonic and the ... [more ▼]

Myxofibrosarcoma (MFS) is a variant of the group of malignant fibrous histiocytomas. It is one of the most aggressive types of soft tissue neoplasms. The clinical presentation is not pathognomonic and the histological aspects are highly heterogenous, frequently delaying the diagnosis or leading to misdiagnosis. Complementary histochemical and immunohistochemical stainings are mandatory to achieve the diagnosis of MFS. A 78-year-old male patient is presented illustrating this diagnostic pitfall. Extensive surgery followed by radiotherapy is the first choice treatment. [less ▲]

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See detailChronic annular lesions of the cheeks
LOTHER, Anne Sophia; ARRESE ESTRADA, Jorge ULg; NIKKELS, Arjen ULg

in International Journal of Dermatology (2013), (52), 649-650

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See detailChronic annular lesions of the cheeks
LOTHER, Anne-Sophia; ARRESE ESTRADA, Jorge ULg; NIKKELS, Arjen ULg

in International Journal of Dermatology (2012)

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See detailIpilimumab induces simultaneous regression of melanocytic naevi and melanoma metastases
LIBON, Florence ULg; ARRESE ESTRADA, Jorge ULg; RORIVET, A. et al

in Clinical & Experimental Dermatology (2012), (4452), 1-4

Background : Ipilimumab blocks cytotoxic T-lymphocyte-associated antigen (CTLA)-4, potentiating the antimelanoma T-cell host reponse. Ipilimumab has been shown to improve overall survival in patients with ... [more ▼]

Background : Ipilimumab blocks cytotoxic T-lymphocyte-associated antigen (CTLA)-4, potentiating the antimelanoma T-cell host reponse. Ipilimumab has been shown to improve overall survival in patients with previously treated metastatic melanoma. CTLA-4 antibodies generate immune responses to the melanoma-associated antigens Melan-A, NY-ESO-1 and glycoprotein (gp) 100 in metastatic melanoma. Digital epiluminescence microscopy (DELM) is a noninvasive method permitting the monitoring of the morphology of melanocytic lesions over time. Observation : A 50-year-old man with metastatic melanoma received four ipilimumab injections after failure of dacarbazine chemotherapy. Positron emission tomography revealed regression of pulmonary metastases, and simultaneously, DELM showed regression of several melanocytic naevi. On histological examination of the regressing naevi, prominent CD8+, CD4+ and CD45R0 lichenoid lymphohistiocytic infiltrates were seen, whereas nonregressing naevi were almost free of inflammatory infiltrate. Conclusion : Expression of melanoma-associated antigens in benign melanocytic naevi may explain the induction of naevus regression by ipilimumab. DELM could represent a valuable noninvasive method to monitor ipilimumab efficacy. [less ▲]

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See detailTumores cutaneos benignos
ARRESE ESTRADA, Jorge ULg; NIKKELS, Arjen ULg

in TINCOPA-WONG, OSCAR (Ed.) DERMATOLOGIA (2011)

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