RCAAP Repository

The increasing number of patients undergoing antithrombotic therapy and a higher prevalence of skin neoplasia implies an adequate management of these drugs in the perioperative period during dermatological surgery. The authors present and discuss the protocol for clinical practice followed in the Dermatology and Venereology Department of Centro Hospitalar Universitário São João. Suspension or maintenance of therapy with antiplatelet and/or anticoagulant drugs should be assessed individually, taking into account the patient and intervention’s bleeding risk and the degree of thrombotic risk of the patient. In these patients, local hemostatic measures are particularly relevant in the management of perioperative haemorrhage and should be thorough. The Immunohemotherapy Department provides collaboration in situations of difficult bleeding management.

Syphilis is a sexually transmitted infection with a multiplicity of clinical presentations that has been known for centuries. Recently, a new wave of syphilis has been reported in developed countries and men who have sex with men, especially those coinfected with human immunodeficiency virus (HIV), have the highest rates of syphilis infection. In these patients, cutaneous manifestation can be even more diverse. We report a case of secondary syphilis in a young male patient coinfected with HIV whose presentation consisted of extensive condylomata lata lesions.

Introduction: Epoxy resins, widely used in several industrial sectors, are among the main causes of allergic contact dermatitis. The wind turbine production industry is one of the sectors that uses these products widely. This study aimed to assess the prevalence of contact allergy to epoxy resin and its components among wind turbine blades production workers with suspected contact dermatitis. Methods: We performed a retrospective analysis of the patch test results performed between 2012 and 2019 in wind turbine blades production workers with dermatitis and characterized their demographic and clinical data, patch test results and the occupational impact of allergic contact dermatitis on these workers. Results: Out of the 3049 patients patch tested in the period 2012-2019, we identified thirteen wind turbine blades production workers, predominantly male (69.2%). All of them handled glues, resins and/or paints in their daily work activities. Seven (53.8%) had a combination of hand dermatitis and airborne dermatitis, two (15.4%) had exclusively hand dermatitis and four (30.8%) had predominantly airborne dermatitis. All patients had positive patch test for epoxy resin and ten patients (76.9%) had also reaction for 1,6-hexanediol diglycidylether. Two patients (15.4%) also had a reaction to the already hardened resin powder. Four (30.8%) patients had to quit their jobs due to allergic contact dermatitis and three (23.1%) were transferred to another workstation without exposure to epoxy resin. Avoidance of exposure resulted in a significant improvement. Conclusion: With this study, we confirmed that epoxy resin and its components are the main cause of dermatitis among wind turbine blades production workers, that eczema occurs by direct contact and by airborne exposure.

Introduction: Chromium has been responsible for occupational skin disease, both irritant and/or allergic contact dermatitis. In order to minimize this problem, regulatory measures limiting its use have been implemented. The impact of these regulations should be monitored over time. Material and Methods: A retrospective study from 2009 to 2018 was carried out in the Department of Dermatology to assess the temporal trend of chromium sensitization evaluated by patch testing with potassium dichromate 0.5% pet, particularly considering age, sex and its relationship with occupational activity. Results: 3277 individuals were studied, 2369 females (72.29%) and 908 males (27.71%). Of those 621 (18.95%) fulfilled criteria for occupational contact dermatitis. Chromium allergy was found in 118 (3.60%) patients, 64 females (54.4%) and 54 males (45.76%). We found that male patients were significantly more frequent (45.76% vs 27.03%; p<0.001), as well as occupational dermatitis (31.35% vs 18.47%; p<0.001), hand dermatitis (53.54% vs 23.52%; p<0.001) and age above 40 years (70.34% vs 56.76%; p=0.003). Discussion/Conclusion: The results show a high prevalence (3.60%) of chromium positive patch tests. In our study, there has not been a significant decrease in sensitization to chromium over the years. Interestingly cases classically related to this allergy (cement in the building industry) are no longer the main cause of the problem. We found other sources such as leather as a main cause of allergic sensitization, suggesting a change of the panorama.

The double V-Y sliding island flap is a viable option for the reconstruction of lip defects, with a favorable cosmetic-functional result. We present the case of a woman with a basal cell carcinoma of the upper labial region, that after excision, has been reconstructed using a double sliding island flap. The authors describe the surgical technique as well as its main advantages and applicability.

Paracoccidioidomycosis, the most prevalent deep mycosis in Latin America, is caused by dimorphic species of the genus Paracoccidioides, affects predominantly male rural workers between 30-50 years of age and is an important cause of morbidity and mortality. It can present in two clinical forms: acute/subacute or chronic. In rare cases paracoccidioidomycosis may simulate neoplasia and must be considered as a differential diagnosis of intra-abdominal tumors in endemic areas. We report an exuberant case of subacute paracoccidioidomycosis in an elderly lady, although it is more frequent in the juvenile form. Multiple facial skin lesions were associated with a wasting syndrome and extensive adenopathy including in the hepatic area, causing bile duct dilatation simulating a cholangiocarcinoma. Skin histopathology was diagnostic and antifungal treatment allowed complete resolution of cutaneous and systemic lesions, thus highlighting the merit of the dermatologist, who was fundamental for the conclusive diagnosis and institution of specific therapy, resulting in a favorable outcome.

Cutaneous plasmacytosis is a rare dermatosis that is classically characterized by the presence of multiple papules and reddish- -brown nodules mainly in the trunk. It most commonly affects elderly Asians, with few reports in Caucasians and young patients. On histopathology there is a polyclonal proliferation of mature plasm cells. The objective of this report is to present a case of atypical manifestation of this rare disease, both due to clinical and epidemiological aspects.

Acne vulgaris is a chronic disease of the pilosebaceous unit characterized by cutaneous polymorphism, representing one of the most prevalent diseases in adolescence. It can lead to physical sequelae, such as disfiguring scars, and psychological, with a decreased quality of life and psychosocial function. Thus, an effective therapeutic strategy is essential in order to promote its resolution and minimize sequelae. Nowadays, there are several available drugs, but their choice requires biopsychosocial assessment of the patient. Recent studies have shown promising new therapeutic agents, as alternatives to topical retinoids, oral isotretinoin, oral antiandrogens, and antibiotics, which would allow a reduction in antibiotic resistance and a consequent increase in efficacy with a substantial reduction in adverse effects. Increasing security and tolerability of new drugs would improve the current approach of acne treatment.

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Introduction: Acne and isotretinoin, one of its treatment, have been linked to the occurrence of depression. Our aim was to study if isotretinoin is associated with depression in a sample of acne patients followed for 6 months comparing them with acne patients under other treatment modalities and control patients without acne. Methods: One hundred individuals were included: 50 controls and 50 with acne (24 using and 26 not using isotretinoin). Patients and controls answered the Beck Depression Inventory (BDI) and the 12 Item-Short Form Health Survey for quality of life (SF-12). Acne patients repeated this evaluation in 90 and 180 days. Results: No differences were found between controls and acne patients regarding BDI results but controls performed worse in the SF-12 mental domain (p=0.004). No differences were found within the acne group between those treated and not treated with isotretinoin in the comparison of the BDI and SF-12 (mental and physical domains) in days 0. 90 and 180 (all with p>0.05). Conclusion: In this small sample isotretinoin treatment showed to be safe regarding the occurrence of depression.

The infectious risk associated with biological therapy is well studied today and screening and prophylaxis strategies have been stablished. However, this may not be true for systemic steroids or DMARDs (disease-modifying anti-rheumatic drugs) such as methotrexate and cyclosporine, even after long term use. The dose and duration of therapy with systemic steroids are related to the occurrence of opportunistic infection. Doses above 5 mg/day are associated with bacterial infection, above 10 mg/day with herpes zoster virus (HZV) reactivation, and above 15 mg/day or for more than 2 to 4 weeks with tuberculosis reactivation, which implies proper screening and chemoprophylaxis. Systemic steroids also appear as one of the main risk factors for the development of pneumocystosis in non-HIV patients and prolonged doses, for more than 4 weeks, can lead to hepatitis B virus (HBV) infection reactivation, and justify the beginning of prophylaxis with tenofovir disoproxil fumarate or entecavir. Cases of strongyloidiasis with hyperinfection syndrome have also been reported in patients on steroids. The degree of immunosuppression conferred may contraindicate live attenuated vaccines. Methotrexate and cyclosporine have a low infectious risk when used as monotherapy. Symptom surveillance is the main preventive strategy. However, both are immunomodulators, contraindicate live attenuated vaccines administration and are associated with infectious risk. Cyclosporine can lead to bacterial infection and HZV reactivation, and methotrexate is associated with HZV and HBV reactivation, especially if administered at a dose >0.4 mg/kg/week. Both are linked with active tuberculosis when in therapeutic combination with other immunosuppressants. Understanding and studying the risk of infection when using immunosuppressive therapy allows its use in a more informed and safe manner.

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Trichilemmal horn or trichilemmal keratosis is a benign neoplasm, that occurs more frequently in females and in the age group over 50 years old. Clinically, it presents as a cutaneous horn and histologically shows trichilemmal keratinization at the base of the lesion.As an uncommon pathology, in this case report, we will present the case of a young man (14 years old), presenting a keratotic lesion on the forehead for eight months, which revealed the diagnosis of trichilemmal horn after lesion exeresis and anatomopathological analysis.

A previously healthy 20-year-old female presented with extensive retiform purpura located at the face, upper and lower limbs, one week after an episode of acute tonsillitis. Despite the exuberance of the cutaneous findings and progression to skin necrosis she had no accompanying symptoms. Laboratory investigation revealed a heterozygous protein C mutation (exon 9, c.1332G> C, p.Trp444Cys), accounting for a partial deficiency of this anticoagulant protein. The patient was started on broad spectrum antibiotics, anticoagulation and systemic corticosteroids, with no lesional progression and complete resolution of cutaneous ulceration within 6 months. This is a singular case of purpura fulminans, since two different causative factors precipitated the events. The previous tonsillitis reported by the patient is significant, because the serum concentration of protein S may also decrease after an infectious event - post-infectious purpura fulminans. This case illustrates that purpura fulminans due to autoantibodies against protein S, although rare, should be considered, especially in the absence of a severe acute infection. It also illustrates how in a given patient different independent factors can act simultaneously, triggering potentially devastating clinical scenarios.

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Zoon balanitis and lichen sclerosus are both chronic inflammatory disorders of the genital mucosa that usually affect middle-aged or elderly uncircumcised men.Although the precise etiology of Zoon balanitis is still unclear, a pathogenic role of irritant and mechanical factors has been suggested. Therefore, foreskin sclerosis and phimosis caused by male genital lichen sclerosus may trigger the development of Zoon balanitis. However, until the present, only three cases with clinical and histopathologic features consistent with synchronous presentation of both disorders have been described. We report the case of a 70-year-old male who developed Zoon balanitis in association with lichen sclerosus, that cleared only after circumcision.

Folliculitis decalvans and lichen planopilaris have been considered two distinct cicatricial alopecias. However, biphasic presentation of folliculitis decalvans - lichen planopilaris in the same patient has been recently described, therefore raising the doubt if they are two distinct entities or a continuous phenotypic spectrum.We describe the case of a man who presented clinical, trichoscopic, and histopathological features of both entities. Moreover, we discuss current theories about the pathogenesis of the two diseases and their coexistence in the same patient. The recognition of similar cases allows to optimize the approach and treatment.  

Introduction: At present, the understanding about chronic spontaneous urticarial (CSU) is relatively scarce, particularly with regard to its etiopathogenesis. Due to the lack of data on etiology, the available treatment is only aimed at symptomatic control, with the majority of patients being resistant both to the first and second lines of therapy. Taking into account the impact that CSU may have on the patient and the current difficulties in its control, investigation of biomarkers that predict response to treatment if highly needed. Methods: A review was conducted on biomarkers that allow guiding the therapeutic escalation of these patients in clinical practice, allowing a more effective and early control of urticaria. Results: Many biomarkers are being studied to predict response to therapy, but definitive results are still missing. Nevertheless, most studies point out that a high C-reactive protein or D-dimer, as well as autoimmune-based urticaria, are usually linked to a poor response to anti-H1. In which concerns the two subtypes of auto-immunity involved in CSU, if IgG anti-FcεRI or anti-IgE predominates (autoimmunity type IIb), patients usually have a positive autologous serum skin test (ASST), a positive basophil activation test (BAT), basopenia, eosinopenia and low or very-low total serum IgE, and response to omalizumab will be slow and/or poor, but there is tendency to a favourable outcome on cyclosporine. If IgE anti-self predominates (autoimmunity type I or autoallergy), response to cyclosporine will be poor, but positive and rapid to omalizumb, and these patients usually have a normal or high IgE that will increase after omalizumab therapy, whereas the other parameters typical of type IIb are absent. High D-dimer predicts an unfavourable response to the three therapies. Conclusion: In CSU resistant to second-generation antihistamines, patients who respond favourably to cyclosporine and slowly to omalizumab have mostly underlying type IIb autoimmunity, whereas patients refractory to cyclosporine therapy, but who respond rapidly to omalizumab, have underlying type I or auto-allergic autoimmunity. These subtypes can be indirectly evaluated by total serum IgE, blood cell count, ASST and BAT, but more studies with large cohorts are needed to have more correct predictive data on patients’ response to therapy in CSU.

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