Dermatologic manifestations in pediatric patients with inflammatory bowel disease.

BACKGROUND: Despite studies of dermatologic manifestations in adults with inflammatory bowel disease (IBD), little is known about the prevalence of IBD-associated skin lesions and their correlation with IBD severity in children. We aimed to address these knowledge gaps in our single-center cohort of children with IBD. METHODS: Retrospective chart review of 528 children and adolescents (≤18 years old) with IBD and seen at Mayo Clinic (Rochester, MN) between 1999 and 2017 was conducted. The Chi-Square/Fischer's exact test (with p ≤ .05 to signify statistical significance) was applied to compare categorical outcomes between Crohn's disease (CD) and ulcerative colitis (UC) patients. RESULTS: In total, 425 IBD patients (64.9% CD, 53% males) and ≥1 dermatologic diagnosis were included. Presence of ≥1 cutaneous infection was recorded in 42.8% of participants. Acne was the most common non-infectious dermatologic condition (30.8%), followed by eczema (15.8%) and perianal skin tags (14.6%). Angular cheilitis (p = .024), keratosis pilaris (KP, p = .003), and perianal skin complications (i.e., skin tags, fistula, and abscesses; all p < .001) were more frequently diagnosed among children with CD, while fungal skin infections (p = .017) were more frequently diagnosed in UC patients. Severity of IBD correlated with higher prevalence of perianal fistula (p = .003), perianal abscess (p = .041), psoriasis (p < .001), and pyoderma gangrenosum (PG, p = .003). CONCLUSIONS: Both IBD-specific and IBD-nonspecific dermatologic conditions are very prevalent in childhood IBD, the most common being infectious. Children with CD are more likely to experience angular cheilitis, KP, and perianal skin findings than those with UC. Perianal disease, psoriasis, and PG are associated with more severe IBD.

Cheilitis in an atopic dermatitis patient associated with co-infection of Staphylococcus pseudintermedius and Staphylococcus aureus.

BACKGROUND: Atopic dermatitis (AD) is an inflammatory skin condition distinguished by an activated Th2 immune response. The local skin microbial dysbiosis is a contributing factor to the development of AD. The pathogenic coagulase-positive Staphylococcus aureus is the primary species responsible for the progression of AD. Even though Staphylococcus pseudintermedius is an animal-origin pathogen, it is increasingly becoming a source of concern in human diseases. As another coagulase-positive Staphylococci, it is crucial to pay more attention to S. pseudintermedius isolated from the lesion site. RESULTS: In our investigation, we presented a case of cheilitis in a patient with atopic dermatitis (AD). We utilized culture and next-generation genomic sequencing (NGS) to identify the bacteria present on the skin swabs taken from the lip sites both prior to and following treatment. Our findings indicated that the predominant bacteria colonizing the lesion site of AD were S. pseudintermedius and S. aureus, both of which were eradicated after treatment. The Multi-locus sequence typing (MLST) of S. pseudintermedius and S. aureus demonstrated coordinated antibiotic susceptibility, with ST2384 and ST22 being the respective types. Although the skin abscess area resulting from S. pseudintermedius infection was significantly smaller than that caused by S. aureus in mice, the expression of cytokines interleukin-4 (IL-4) and interleukin-5 (IL-5) were significantly higher in the S. pseudintermedius-infected mice. CONCLUSIONS: The S. pseudintermedius strain isolated from the lesion site of the AD patient exhibited a higher expression of IL-4 and IL-5 when colonized on mouse skin, as compared to S. aureus. This observation confirms that S. pseudintermedius can effectively induce the Th2 response in vivo. Our findings suggest that animal-origin S. pseudintermedius may play a role in the development of AD when colonized on the skin, emphasizing the importance of taking preventive measures when in contact with animals.

Zinc Deficiency with Cheilitis: A Report of Five Cases.

Zinc deficiency has long been known as acrodermatitis enteric dermatitis (congenital zinc deficiency). On the other hand, acquired zinc deficiency has attracted attention as a familiar disease in recent years. Epidemiological studies in Japan have shown that acquired zinc deficiency is more common than expected. It is also known that serum zinc levels fall markedly with age. In this report, several cases of acquired zinc deficiency that caused cheilitis are described. In all cases, the only symptom was cheilitis, the serum zinc level was low, and all cases were relieved by zinc supplementation. Zinc deficiency is associated with a range of pathological conditions, including mucocutaneous symptoms, delayed wound healing, dysgeusia, anemia, impaired immunity, and retarded growth development disorders. However, zinc deficiency may be overlooked even in cases of cheilitis alone. Especially in intractable cases, it is important to suspect zinc deficiency as one at the differential diagnoses.

Laser Therapy for the Treatment of Actinic Cheilitis: A Systematic Review.

Actinic cheilitis (AC) is a chronic inflammation of the lip considered an oral, potentially malignant disorder associated with an increased risk of lip squamous cell carcinoma (SCC) development. Controversies surrounding current therapeutic modalities of AC are under debate, and the implications of laser treatment have not been specifically investigated through a systematic review design. The present study aims to evaluate the degree of evidence of laser for the treatment of AC in terms of efficacy and safety. We searched for primary-level studies published before January 2022 through MEDLINE/PubMed, Embase, Web of Science, Scopus and CENTRAL, with no limitation in publication language or date. We evaluated the methodological quality and risk of bias of the studies included using the updated Cochrane Collaboration's tool for assessing risk of bias (RoB-2). Twenty studies (512 patients) met our eligibility criteria. Laser therapy showed a complete clearance of AC in 92.5% patients, with a maximum recurrence rate of 21.43%, and a very low frequency of malignant transformation to SCC (detected in only 3/20 studies analyzed). In addition, cosmetic outcomes and patient satisfaction were described as excellent. In conclusion, our findings indicate that laser therapy is a high efficacy approach to AC.

Allergic contact cheilitis caused by propolis: case report.

Propolis is a lipophilic resin extracted from plants by bees. The purpose of this case report was to show the importance of this substance as cause of allergic contact cheilitis. A 21-year-old female patient complained of pruritic perioral eczema for 5 years. In the past months it also affected the neck. After diagnosing contact dermatitis, she was submitted to a patch test with a Latin American baseline series. The result was strongly positive for propolis (++) and weakly positive for perfume mix I (+). After the test, the patient revealed she had been using propolis drops, per oris, for 10 years. The worsening of the condition was due to increased dose, aiming "to improve immunity", during the coronavirus disease 2019 (COVID-19) pandemic. The contact allergy to propolis might be increasing due to the widespread use of natural products. Propolis is a sensitizer to be considered in patients with long-lasting cheilitis.

Allergic contact cheilitis caused by propolis: case report

ABSTRACT Propolis is a lipophilic resin extracted from plants by bees. The purpose of this case report was to show the importance of this substance as cause of allergic contact cheilitis. A 21-year-old female patient complained of pruritic perioral eczema for 5 years. In the past months it also affected the neck. After diagnosing contact dermatitis, she was submitted to a patch test with a Latin American baseline series. The result was strongly positive for propolis (++) and weakly positive for perfume mix I (+). After the test, the patient revealed she had been using propolis drops, per oris, for 10 years. The worsening of the condition was due to increased dose, aiming "to improve immunity", during the coronavirus disease 2019 (COVID-19) pandemic. The contact allergy to propolis might be increasing due to the widespread use of natural products. Propolis is a sensitizer to be considered in patients with long-lasting cheilitis.

Isolated lip dermatitis (atopic cheilitis), successfully treated with topical tacrolimus 0.03% / Dermatitis labial aislada (queilitis atópica), tratado con éxito con tacrolimus tópico al 0,03%

Background: Exfoliative and erosive cheilitis, may be a source of speech and chewing discomfort, but may alsobe an aesthetic issue for the patients affected. Such a clinical presentation may implicate a variety of inflamma-tory conditions, including atopic (eczematous) cheilitis. Topical and systemic agents, e.g. corticosteroids, havebeen used to treat inflammatory lip conditions. Topical tacrolimus has also been used in some inflammatory lipconditions.Material and Methods: We performed a retrospective clinical analysis of atopic cheilitis patients.Results: Between 2015 and 2020, we addressed 7 (seven) patients with atopic dermatitis affecting only lips andwere diagnosed as atopic-eczematous cheilitis. They were treated with 0.03 per cent topical tacrolimus ointmentand responded completely.Conclusions: These cases represent an underreported atopy / eczema event;-few cases of atopic cheilitis withoutconcomitant dermal lesions appear in the literature. We are also showing and discussing yet another applicationof tacrolimus in a local atopic form of inflammation affecting the lips.(AU)

Síndrome de Miescher: una causa poco frecuente de tumefacción labial / Miescher syndrome: an uncommon cause of recurrent swelling of the lips

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Chronic granulomatous disease as a risk factor for cutaneous lupus in childhood.

Chronic granulomatous disease (CGD) is a primaryimmunodeficiency disorder that affects the phagocyticcells of the innate immune system. It is characterizedby recurrent or persistent infections with granulomaformation. Lupus-like lesions have been reported incarriers of CGD and less frequently, in patients withCGD. Immunological study in these patients areusually negative. We describe the case of an 8-yearoldboy with CGD who developed chronic and acutecutaneous lupus erythematous with angular cheilitis,oral ulcers, Raynaud phenomenon, and positiveserologies for antinuclear, anticentromere, and anti-Saccharomyces cerevisiae antibodies.

Hallazgos clínicos inusuales en un brote de escarlatina / Unusual clinical findings in an outbreak of scarlet fever

Introducción: la escarlatina es una enfermedad infecciosa producida por Streptococcus pyogenes que produce un cuadro característico de faringoamigdalitis y exantema. Su diagnóstico suele ser fácil, pero los casos atípicos pueden pasar desapercibidos o ser confundidos con otros cuadros. Pacientes y método: estudio descriptivo retrospectivo de los casos de escarlatina en la población pediátrica adscrita a un centro de salud en la temporada 2013/2014. Describimos la epidemiología, las características clínicas, las pruebas microbiológicas, el tratamiento y la presencia de recidivas. Resultados: se obtuvieron 91 casos, resultando una incidencia de 3,2%, de los que 76 fueron confirmados microbiológicamente con test rápido o cultivo. La edad media fue 4,15 años. Los principales motivos de consulta fueron 'fiebre y dolor de garganta' y 'fiebre y erupción cutánea'. Las alteraciones faríngeas más frecuentes fueron la hiperemia y petequias en paladar, y en pocos pacientes se encontró exudado amigdalar. Casi un 40% de pacientes tenían síntomas catarrales, 71 pacientes presentaban un exantema típico, y 20 uno atípico. La mayoría se trató con amoxicilina o penicilina durante diez días; 15 pacientes tuvieron recidivas. Conclusiones: de los datos obtenidos destacan el gran número de casos, la presencia de síntomas catarrales y la poca frecuencia de exudado amigdalar. Fue llamativa la variabilidad de los exantemas con hallazgos como eritrodermia extensa, urticaria, exantema macular, petequias en localizaciones atípicas y edema facial y de miembros. El test rápido en Atención Primaria permite, por su utilidad, el diagnóstico de casos dudosos (AU)

Introduction: scarlet fever is an infectious disease caused by Streptococcus pyogenes that manifests as a typical pharyngoamigdalitis and exanthema. Its diagnosis is usually easy, but atypical cases may go unnoticed. Patients and methodology: retrospective descriptive study of pediatric population assigned to a Primary Care center a health centre between 2013/2014. We define the epidemiology, clinical characteristics, microbiological tests, treat­ment and appearance of relapses. Results: 91 cases, resulting in an incidence of 3.2% of which 76 were confirmed microbiologically with a rapid test or culture. The average age was 4,15 years. The main reasons for consultation were 'fever and sore throat' and 'fever and rash'. The most common alterations were pharyingeal hyper­emia and petechiae on the palate and in a few patients we found tonsillar exudate. Almost 40% of patients had catarrhal symptoms. 71 patients showed a typical exanthema and 20 of them an atypical one. Most of them were treated with amoxicillin or penicillin for 10 days. 15 patients had recurrence. Conclusions: from the data obtained it is important to highlight the large amount of cases, the presence of catarrhal symptoms and the infrequency of tonsillar exudates. It was remarkable the variability of recurrences with findings such as extensive erythroderma, urticaria, macular rashes, atypically placed petechiae and facial and member edema. The rapid test on primary care units allows diagnosis on doubtful cases (AU)

Eccema de labios. Experiencia en la Unidad de Eccema de Contacto de un centro terciario español / Lip eczema. Experience in the Contact Dermatitis Unit of a Spanish tertiary hospital

Fundamento: El eccema labial es un problema poco frecuente en las Unidades de Eccema de Contacto (UEC). Hasta el momento han sido publicadas escasas series que muestren el perfil de estos pacientes y las causas de su eccema, ninguna de ellas española. El objetivo de este estudio fue el de analizar el perfil epidemiológico de los pacientes que acuden a la UEC en nuestro entorno, los diagnósticos principales y los alérgenos relevantes. Material y métodos: Se realizó una revisión retrospectiva de los pacientes remitidos a la UEC en el periodo 2005-2014. Se realizaron pruebas epicutáneas con la serie estándar ampliada del Grupo Español de Investigación en Dermatitis Alérgica de contacto (GEIDAC), productos propios y otras baterías complementarias. Resultados: En los 78 pacientes estudiados, los diagnósticos más frecuentes fueron la dermatitis de contacto alérgica y la dermatitis atópica. Los alérgenos relevantes más frecuentes fueron los cosméticos y los fármacos tópicos. Conclusiones: Es fundamental estudiar a los pacientes con eccema labial con pruebas epicutáneas para poder filiar correctamente su etiología y según esto, realizar un tratamiento más adecuado (AU)

Background: Lip eczema is an infrequent problem in Contact Dermatitis Units (CDU). Very few series have been published to date that show the profiles of such patients and the causes of their eczemas, and none are Spanish. The goal of this study was to analyze the epidemiological profile of the patients who attend a CDU in our setting, the main diagnoses and the relevant allergens. Methods: A retrospective review was made of the patients referred to the CDU in the 2005-2014 period. Patch tests were carried out with the extended standard series of the Spanish Research Group on Allergic Contact Dermatitis (Grupo Español de Investigación en Dermatitis Alérgica de contacto - GEIDAC), our own products and other complementary sets. Results: The most frequent diagnoses in the 78 patients studied were allergic contact dermatitis and atopic dermatitis. The most frequent relevant allergens were cosmetics and topical medications. Conclusions: It is essential to study the patients with lip eczema with patch tests to be able to correctly determine their etiology and accordingly to carry out the most suitable treatment (AU)

Correlação entre aspectos clínicos e marcadores biológicos no processo de fotocarcinogênese de lábio / Relationship between clinical aspects and biological markers during lip photocarcinogenesis process

A queilite actínica (QA) é uma lesão potencialmente maligna importante para identificar indícios precoces de transformação maligna para o carcinoma epidermoide de lábio (CEL), possibilitando a implementação de um tratamento eficiente e menos invasivo, que promova um melhor prognóstico para os pacientes. Pesquisas recentes indicam que os métodos histopatológicos geralmente são falhos em traçar o risco de malignização de casos de QA, pois além de não demonstrar as alterações genéticas presentes nos queratinócitos, não foram realizados estudos de acompanhamento clínico para avaliar se o grau de displaia epitelial da QA está relacionado ao risco de malignização para CE. Assim, a presente pesquisa teve como objetivo caracterizar, a partir dos casos atendidos no Serviço de Patologia Cirúrgica da FOUSP, qual a diferença de perfil clínico-patológico de pacientes de QA com evolução para CEL, pacientes de QA sem informações e sinais presentes de malignização e pacientes apenas diagnosticados com CEL, e também visou analisar a expressão de Ki67 e pRb nesses três grupos. Para isso, os dados dos pacientes como idade, sexo, cor da pele, aspecto clínico da lesão fundamental, coloração, tamanho e tempo de duração das lesões foram resgatados de 998 casos e distribuídos nessas três categorias. Os resultados da análise clínico-epidemiológica revelaram que o único aspecto clínico estatisticamente significante para diferenciar pacientes apenas diagnosticados com CEL dos demais

grupos foi o tempo de duração das lesões. A análise do grau de displasia epitelial nos casos de QA na amostra presente revelou que todos os pacientes de QA posteriormente diagnosticados com CEL foram classificados como lesões de alto risco, e ainda exibiram em maior frequência as atipias: aumento do número de figuras de mitose, variação anormal do tamanho do núcleo, variação anormal do tamanho da célula e alteração da relação núcleo/citoplasma, figuras de mitose anormais e aumento do número e tamanho de nucléolos. Tanto a expressão da proteína Ki-67 como da proteína pRb não demonstraram significância estatística na comparação entre os grupos do estudo. Assim, a avaliação de uma ampla série de casos revelou diferença significante no tempo de duração do CEL com relação à QA. Além disso, algumas alterações morfológicas foram observadas com maior frequência em casos de QA com evolução para CEL. No entanto, outros marcadores biológicos devem ser testados em conjunto, para tentar diagnosticar alterações precoces que levem ao desenvolvimento de CEL.

Actinic cheilitis (AC) is a potentially malignant lesion important to identify early signs of malignant transformation into lip squamous cell carcinoma (LSCC), enabling the implementation of an efficient and less invasive treatment to patients. Recent researches pointed that histopatological methods often fail to trace malignization risk in AC cases, because they are unable to identify genetic damage in keratinocytes and do not exist a clinical follow-up studie to assess if the grading of epithelial dysplasia in AC is related with the malignancy risk to LSCC development. Thus, this research aims to characterize, from cases of Surgical Pathology Service of Universidade de São Paulo, the differences in clinical and pathological profile among AC patients which had evolution to LSCC, AC patients without signs and information about malignization and patients diagnosed only with LSCC. This study also analyzed the expression of Ki-67 and pRb proteins in these three groups. To conduct this study, data as age, gender, race, fundamental lesion aspect, color, size and duration time of the lesion were collected from 998 patients. The clinical-epidemiological analysis revealed that duration time of the lesion was the statistically significant clinical feature to differentiate patients diagnosed only with LSCC from other groups. The grading of epithelial dysplasia analysis showed that all AC patients with

a posterior diagnosis of LSCC were classified as high risk lesions and these cases also exhibited most frequently atypia figures as: increased number of mitotic features, abnormal variation in nuclear size, abnormal variation in cellular size, increased nuclear/cytoplasmic ratio, abnormal mitotic features and increased number and size of nucleoli. The immunohistochemical expression of both Ki-67 and pRb protein demonstrated lack of significant statistical difference among the groups. We concluded that the evaluation of a large serie of cases revealed differences in duration time of lesion in patiens only diagnoses with LSCC and some morphological criteria were most frequent in AC cases with a posterior diagnosis of LSCC. However, other biological markers must be tested together, to try to identify early steps of LSCC development.

Correlação entre aspectos clínicos e marcadores biológicos no processo de fotocarcinogênese de lábio / Relationship between clinical aspects and biological markers during lip photocarcinogenesis process

A queilite actínica (QA) é uma lesão potencialmente maligna importante para identificar indícios precoces de transformação maligna para o carcinoma epidermoide de lábio (CEL), possibilitando a implementação de um tratamento eficiente e menos invasivo, que promova um melhor prognóstico para os pacientes. Pesquisas recentes indicam que os métodos histopatológicos geralmente são falhos em traçar o risco de malignização de casos de QA, pois além de não demonstrar as alterações genéticas presentes nos queratinócitos, não foram realizados estudos de acompanhamento clínico para avaliar se o grau de displaia epitelial da QA está relacionado ao risco de malignização para CE. Assim, a presente pesquisa teve como objetivo caracterizar, a partir dos casos atendidos no Serviço de Patologia Cirúrgica da FOUSP, qual a diferença de perfil clínico-patológico de pacientes de QA com evolução para CEL, pacientes de QA sem informações e sinais presentes de malignização e pacientes apenas diagnosticados com CEL, e também visou analisar a expressão de Ki67 e pRb nesses três grupos. Para isso, os dados dos pacientes como idade, sexo, cor da pele, aspecto clínico da lesão fundamental, coloração, tamanho e tempo de duração das lesões foram resgatados de 998 casos e distribuídos nessas três categorias. Os resultados da análise clínico-epidemiológica revelaram que o único aspecto clínico estatisticamente significante para diferenciar pacientes apenas diagnosticados com CEL dos demais grupos foi o tempo de duração das lesões. A análise do grau de displasia epitelial nos casos de QA na amostra presente revelou que todos os pacientes de QA posteriormente diagnosticados com CEL foram classificados como lesões de alto risco, e ainda exibiram em maior frequência as atipias: aumento do número de figuras de mitose, variação anormal do tamanho do núcleo, variação anormal do tamanho da célula e alteração da relação núcleo/citoplasma, figuras de mitose anormais e aumento do número e tamanho de nucléolos. Tanto a expressão da proteína Ki-67 como da proteína pRb não demonstraram significância estatística na comparação entre os grupos do estudo. Assim, a avaliação de uma ampla série de casos revelou diferença significante no tempo de duração do CEL com relação à QA. Além disso, algumas alterações morfológicas foram observadas com maior frequência em casos de QA com evolução para CEL. No entanto, outros marcadores biológicos devem ser testados em conjunto, para tentar diagnosticar alterações precoces que levem ao desenvolvimento de CEL.

Actinic cheilitis (AC) is a potentially malignant lesion important to identify early signs of malignant transformation into lip squamous cell carcinoma (LSCC), enabling the implementation of an efficient and less invasive treatment to patients. Recent researches pointed that histopatological methods often fail to trace malignization risk in AC cases, because they are unable to identify genetic damage in keratinocytes and do not exist a clinical follow-up studie to assess if the grading of epithelial dysplasia in AC is related with the malignancy risk to LSCC development. Thus, this research aims to characterize, from cases of Surgical Pathology Service of Universidade de São Paulo, the differences in clinical and pathological profile among AC patients which had evolution to LSCC, AC patients without signs and information about malignization and patients diagnosed only with LSCC. This study also analyzed the expression of Ki-67 and pRb proteins in these three groups. To conduct this study, data as age, gender, race, fundamental lesion aspect, color, size and duration time of the lesion were collected from 998 patients. The clinical-epidemiological analysis revealed that duration time of the lesion was the statistically significant clinical feature to differentiate patients diagnosed only with LSCC from other groups. The grading of epithelial dysplasia analysis showed that all AC patients with a posterior diagnosis of LSCC were classified as high risk lesions and these cases also exhibited most frequently atypia figures as: increased number of mitotic features, abnormal variation in nuclear size, abnormal variation in cellular size, increased nuclear/cytoplasmic ratio, abnormal mitotic features and increased number and size of nucleoli. The immunohistochemical expression of both Ki-67 and pRb protein demonstrated lack of significant statistical difference among the groups. We concluded that the evaluation of a large serie of cases revealed differences in duration time of lesion in patiens only diagnoses with LSCC and some morphological criteria were most frequent in AC cases with a posterior diagnosis of LSCC. However, other biological markers must be tested together, to try to identify early steps of LSCC development.

Early diagnosis of lip cancer preceded by a persistent actinic lesion in a kidney transplant patient: a case report.

Lip cancer is 65 times more likely to occur in kidney transplant patients than in members of the general population. Immunosuppression drugs taken by the transplant patients have been associated with this increased occurrence. This case report shows the progression from actinic cheilosis to squamous cell carcinoma (SCC) in the lower lip of a 58-year-old man receiving immunosuppressive therapy 9 years after undergoing a kidney transplant. Earlier incisional biopsies had resulted in a histological diagnosis of actinic cheilosis. However, the last incisional biopsy showed histological results compatible with SCC, and oncological surgery was performed. Eight months post-surgery, the patient was free of cancer and metastasis. Frequent dental follow-up visits allowed for the early diagnosis, proper treatment, and an improved prognosis for this patient.

Imunoexpressão de galectinas em queilites actínicas e sua relação com características clínicas e gradação histológica / Immunoexpression of galectins in actinic cheilitis and its relationship with clinical and histological grading

A queilite actínica (QA) é uma lesão inflamatória crônica potencialmente maligna que em algumas situações pode se transformar em carcinoma de células escamosas (CCE) de lábio inferior. Os mecanismos moleculares envolvidos neste processo ainda não são completamente esclarecidos. O objetivo desta pesquisa foi avaliar a imunoexpressão das galectinas -1, -3, -7 e -9 e relacionar este aspecto com as características clínicas (sexo, idade e aspecto clínico) e gradação histológica pelo sistema binário (baixo ou alto risco de transformação maligna) em 65 casos de QA. A imunomarcação de cada caso foi avaliada de forma semiquantitativa, na qual foram atribuídos os escores: 0 (0% de células positivas), escore 1 (1 a 30% de células positivas), escore 2 (31 a 60% de células positivas) e escore 3 (mais de 60% das células positivas). A imunoexpressão também foi analisada quanto à localização nos compartimentos celulares e nos estratos epiteliais. A análise estatística foi realizada através dos testes de Mann-Whitney, Qui-quadrado de Pearson e Exato de Fisher com nível de significância estabelecido em 5%. Dos 65 casos de QA, 76,9% eram do sexo masculino, 80% tinham idade superior a 40 anos, 70,8% eram da raça branca e 61,5% foram histologicamente gradadas como QAs de baixo risco. A expressão imunoistoquímica das galectinas foi variável na amostra e de forma geral não exibiu relação com os parâmetros clínicos. A expressão da galectina-1 foi observada em 98,5% dos casos, principalmente no citoplasma em todas as camadas epiteliais e foi elevada em 60% dos casos (escore 3), independente da gradação histológica (p>0,05). A expressão de galectina-3 foi observada em todos os casos, sendo maior nas QAs de alto risco que no grupo de baixo risco (p<0,05), com predominância de marcação no citoplasma e núcleo nas QAs de baixo risco (67,5%) e de marcação apenas no citoplasma nos casos de alto risco (60%) (p<0,05). A galectina-7 foi positiva em todos os casos, majoritariamente na região suprabasal do epitélio (95,4%), porém sem diferenças significativas no escores de expressão entre os grupos histológicos (p>0,05). Com relação à galectina-9, 89,2% dos casos foram positivos, com redução na mediana dos escores de expressão com o aumento do grau histológico (p<0,001), sendo essa expressão predominante no núcleo e citoplasma. Com base nestes resultados, sugere-se que as galectinas analisadas nesta pesquisa podem estar envolvidas no desenvolvimento e progressão das queilites actínicas. (AU)

Actinic cheilitis (AC) is a potentially malignant chronic inflammatory lesion that in some situations can turn into squamous cell carcinoma (SCC) of the lower lip. The molecular mechanisms involved in this process are not yet fully understood. The objective of this research was to evaluate the immunoexpression of galectins-1, -3, -7 and -9 and to relate this with clinical characteristics (sex, age and clinical aspect) and histological grading by the binary system (low or high risk of malignant transformation) in 65 cases of AC. Immunostaining of each case was semiquantitatively evaluated through scores assignment: score 0 (0% of positive cells) score 1 (1 to 30% of positive cells), score 2 (31 to 60% of positive cells) and score 3 (more than 60% of positive cells). The immunoreactivity was also evaluated regarding the location on cellular compartments and on the epithelial layer. Statistical analysis was performed using the Mann-Whitney, Pearson's Chi Square, and Fisher's exact tests with significance level set at 5%. Of the 65 AC cases, 76.9% were male, 80% were older than 40 years, 70.8% were white and 61.5% were histologically graded as low risk ACs. The immunoexpression of galectins in the sample was variable and in general showed no relationship with clinical parameters. Expression of galectin-1 was observed in 98.5 % of cases, mainly in the cell cytoplasm of all epithelial layers and was elevated in 60% of cases (score 3), regardless of the histological grade (p>0.05). The galectin-3 expression was observed in all cases, being higher in high risk ACs than in the low risk group (p<0.05), showing a predominant expression in the cytoplasm and nucleus of low risk ACs (67.5%), and in the only in the cytoplasm of high risk cases (60%) (p< 0.05). Galectin-7 was positive in all cases, mostly in the suprabasal region of the epithelium (95.4%), but no significant differences in the expression scores of histological groups (p>0.05). With respect to galectin9, 89.2% of cases were positive showing decrease in median of scores as there was increase in histological grade (p<0.001), with predominant expression in the nucleus and cytoplasm. Based on these results, it is suggested that galectins analyzed in this study may be involved in the development and progression of actinic cheilitis. (AU)