Browsing by Author "Abarzúa, Alvaro"

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    Atenolol versus propranolol for the treatment of infantile hemangiomas : a randomized controlled study
    (2014) Abarzúa, Alvaro; Navarrete Dechent, Cristián Patricio; Heusser Risopatron, Felipe; Retamal, J.; Zegpi Trueba, María Soledad
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    Candida parapsilosis and candida guillermondii: Emerging pathogens in nail candidiasis
    (2014) Fich, Félix; Abarzúa, Alvaro; Pérez, M.; Nauhm, Y.; León, E.
    Background: Onychomycosis of the fingernails and toenails is generally caused by dermatophytes and yeasts. Toenail mycoses involve mainly dermatophytes but when Candida is also involved, the strain most commonly isolated worldwide is C. albicans. Aims: To determine Candida strains prevailing in onychomycosis. Materials and Methods: A retrospective, observational and descriptive study of fungal cultures retrieved from the registry of the microbiology laboratory of the Pontificia Universidad Católica was performed. Specimens obtained from patients attending the healthcare network between December 2007 and December 2010 was analyzed. Statistical Analysis: A descriptive statistical analysis was performed. Results: Candida was retrieved from 467 of 8443 specimens (52% fingernails and 48% toenails). Cultures were negative in 5320 specimens (63.6%). Among Candida-positive cultures, parapsilosis was the most commonly isolated strain with 202 cases (43.3%). While isolates of Candida guillermondii were 113 (24.2%), those of Candida albicans were 110 (23.6%), those of spp. were 20 (4.3%) and there were 22 cases of other isolates (4.71%). Among the 467 patients with positive cultures for Candida, 136 (29,1%) were men and 331 (70,9%) were women. All patients were older than 18 years old. Clinical files were available for only 169 of the 467 patients with positive cultures for Candida. For those, age, gender, underlying illnesses and use of immunossupresive agents during the trial was reviewed. Conclusions: The present study shows that both C. parapsilosis as well as C. guillermondii appear as emerging pathogens that would be in fact taking the place of C. albicans as the most commonly isolated pathogen in patients with Candida onychomycosis. The relative percentage of C parapsilosis increases every year. Identification of Candida strains as etiological agents of nail candidiasis becomes relevant to the management both nail as well as systemic candidiasis, in view of the resistance to conventional treatments readily reported in the literature.
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    Concomitant poroma and porocarcinoma
    (2017) Abarzúa, Alvaro; Álvarez Véliz, S.; Moll Manzur, C.
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    Consenso de terminología en microscopia confocal de reflectancia en español mediante método Delphi
    (2023) Abarzúa, Alvaro; Banuls, J.; Cabo, H.; Carrera, C.; Gamo, R.; González, S.; Jaimes, N.; Navarrete Dechent, Cristián Patricio; Perez Anker J.; Roldan Marín, R.; Segura, S.; Yelamos, O.; Puig, S.; Malvehy, J.
    La terminología usada para describir los diferentes hallazgos en la microscopía confocal de reflectancia (MCR), tanto en lesiones melanocíticas, como en no melanocíticas se ha consensuado en inglés. En el presente trabajo, se proponen los términos en español que mejor interpretan estos conceptos ya descritos para la MCR, mediante el consenso de expertos de distintas nacionalidades de habla hispana y utilizando el método DELPHI para el acuerdo final. Se obtuvieron 52 términos en total, de los cuales 28 fueron para lesiones melanocíticas y 24 para lesiones no melanocíticas. El uso de la nomenclatura propuesta permitirá una homogeneización y mejor entendimiento de las estructuras; una descripción más estandarizada en los registros clínicos y una mejor interpretación de estos informes por otros dermatólogos.
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    Dermoscopy of primary cutaneous B- and T-cell lymphomas and pseudolymphomas presenting as solitary nodules and tumors : a case-control study with histopathologic correlation
    (2019) Navarrete Dechent, Cristián Patricio; Del Puerto Troncoso, Constanza; Abarzúa, Alvaro; Molgó Novell, Montserrat; Geller, Shamir; Andreani, Sebastián; Cury Martins, Jade; Sanches, José Antonio; Montoya, Javier; González Bombardiere, Sergio; Uribe González, Pablo Francisco
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    Differentiating basal cell carcinoma from intradermal nevi along the eyelid margin with dermoscopy : a case series
    (2021) Williams, N. M.; Navarrete Dechent, Cristián Patricio; Marghoob, A. A.; Abarzúa, Alvaro; Salerni, G.; Jaimes, N.
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    Eosinophilic annular erythema in childhood - Case report
    (2016) Abarzúa, Alvaro; Giesen, L.; Silva Valenzuela, Sergio; González Bombardiere, Sergio
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    Eritema indurado de Bazin diseminado
    (2018) Rojas Lechuga, María Jesús; Antúnez Lay. Andrea; Cataldo Cerda, Karina; Abarzúa, Alvaro
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    Erupción de pápulas eritematosas y ulceradas en una mujer de 74 años de edad
    (2016) Antúnez-Lay, Andrea; Del Barrio Díaz, Pablo; Abarzúa, Alvaro
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    Facial lipoatrophy secondary to Lupus Panniculitis corrected with hyaluronic acid - A case report
    (2015) Quezada Gaón, Natacha; Vera Kellet, Cristián Andrés; Abarzúa, Alvaro
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    Lago venoso de localización infrecuente
    (2016) Abarzúa, Alvaro; Álvarez Véliz, Sergio; Moll Manzur, Catherina; Cataldo Cerda, Karina
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    Long-standing Scaly Erythematous Tumor on the Lower Leg
    (2017) Abarzúa, Alvaro; Ortiz-Lazo, E.; González Bombardiere, Sergio
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    Metástasis facial de cáncer de mama asociada a parálisis facial
    (2018) Cevallos, Carolina A.; Solis, Marco A.; Molgó Novell, Montserrat; González Bombardiere, Sergio; Abarzúa, Alvaro
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    Nasal tumor lesion: Challenge
    (2015) Molgó Novell, Montserrat; Abarzúa, Alvaro; Giesen, Laura; González Bombardiere, Sergio
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    Nevo epidérmico poroqueratósico : a propósito de un caso
    (2016) Rojas-Erazo, Camilo; Abarzúa, Alvaro; González Bombardiere, Sergio
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    Oral propranolol for treating infantile hemangiomas: a case series of 57 patients
    (2012) Zegpi Trueba, María Soledad; Abarzúa, Alvaro; Silva-Valenzuela, S.; Navarrete-Dechent, C.; Uribe-Gonzalez, P.; Nicklas-Diaz, C.
    Abstract Introduction and objectives Infantile hemangiomas (IH) are a frequent vascular tumor. In recent years, propranolol has emerged as an alternative in the treatment of IH. The objective of the present study was to evaluate the effectiveness of propranolol for the treatment of IH. Materials and methods Patients with IH requiring treatment were included. Cardiologic evaluation was made to every patient and electrocardiogram (ECG) and echocardiogram were done. Oral propranolol was started in an ambulatory way at a dose of 2 mg/kg daily divided in two doses. At ten days all the patients were evaluated with a 24-h rhythm holter. Evaluation of effectiveness: In clinical controls and by images IH were formally analyzed, without blindness. Response was categorized as complete response (CR), partial response (PR) and no response (NR). Adverse events: Adverse events were registered in a special category of the formulary. Results 57 patients were included. Mean age was 9.7 months. There were 80.8% females. Mean duration of treatment was 7.3 months (1–24 months). Efficacy: 50.6% had CR, 49.3% had PR. There were a 7% of adverse events. No differences in response rate exist according to age or location. No rhythm holter was altered at ten-day control. Conclusion Our study highlights the possibility of starting propranolol in an ambulatory way, establishes a dose of 2 mg/kg/day and confirms the security profile of the drug. We consider propranolol as a first line treatment for IH.
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    Reflectance confocal microscopy in the evaluation of targetoid haemosiderotic haemangioma apropos two cases
    (2018) Navarrete Dechent, Cristián Patricio; Schwartz, Rodrigo; González, Salvador; González Bombardiere, Sergio; Abarzúa, Alvaro; Uribe González, Pablo Francisco
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    Scleromyxedema without paraproteinemia
    (2014) Abarzúa, Alvaro; Giesen, L.; Sandoval Osses, Mauricio; González Bombardiere, Sergio
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    Superficial angiomyxoma of the skin
    (2016) Abarzúa, Alvaro; Lallas, Aimillios; Piana, Simonetta; Longo, Caterina; Moscarella, Elvira; Argenziano, Giuseppe
    Superficial angiomyxomas (SA) of the skin are rare benign cutaneous tumors of soft tissue composedof prominent myxoid matrix and numerous blood vessels. SA are more common in males [1] and theyare usually located on the trunk but can also appear on the lower limbs, head, neck and genitalia [2,3].Treatment is surgical, the total excision is curative, but local recurrence is possible [4]. Herein wepresent a 72-year-old patient with a history of melanoma in situ, with a new lesion on the lower back.