New Skin Flaps for Triangular Surgical Defects: Design, Assessment on Experimental Model, and Clinical Outcomes.

BACKGROUND: Most skin flaps are designed to repair circular surgical defects after skin tumor excisions, but few flaps have been described to reconstruct triangular defects. OBJECTIVE: The aim of this study was to describe new skin flaps for triangular surgical defects using an innovative experimental model. METHODS: We tested new flap designs in an experimental pig skin model using a tension sensor to measure maximum tension and tension augmentation when the flap is performed in an area of increased basal tension. The results were compared with those from classic flaps. Finally, the new flaps were performed on a series of patients with triangular surgical defects. RESULTS: Six new flaps with adequate levels of tension were obtained and named after their morphology: spider crab, mantis, toy windmill, nautilus, origami bird, and clover. These new flaps were successfully performed on a series of 40 patients; among them, spider crab and mantis flaps showed a better response to basal tension augmentation. CONCLUSIONS: Six new flaps for triangular surgical defects were proposed and successfully performed in a series of 40 patients, using an experimental pig skin model and a tensiometer.

Topic tacrolimus, alternative treatment for oral erosive lichen planus resistant to steroids: a case report.

The lichen planus is a mucocutaneous disease with unknown etiology and auto-immune pathogenia. There have been three variants of lichen planus: the reticular, the plaque-like and the atrophic-erosive lesions. It s a chronic disease with acute relapses that generally affects more frequently to women from the fourties. The diagnostic is based on the clinic identification of the lesions joined with the histopathologic study (basal cells hidropic degeneration, linfoplasmocitic infiltration and absence of displasy signs). The great number of therapeutic options are explained for its high prevalency (0.5-2%), its recurrence and its risk for malignant transformation. We present a case of oral erosive lichen planus, refractory to numerous treatments, mainly corticosteroids. During 15 days the lesion responded to the administration of a 0.1% tacrolimus in topic application. This article tries to show the new indication of tacrolimus, a calcineurin inhibitor immunosuppressor, that it is effective in the erosive lesions treatment.

Topic tacrolimus, alternative treatment for oral erosive lichen planus resistant to steroids: a case report

El liquen plano es una enfermedad mucocutánea de etiología desconocida y patogenia autoinmune. Existen tres variantes de liquen plano: la forma reticular, la forma en placas y la forma atrófico-erosiva. El curso es crónico con frecuentes reactivaciones. Afecta con más frecuencia a mujeres en la 4ª década de la vida y superiores. El diagnóstico se basa en la identificación clínica de las lesiones junto a el estudio histopatológico (degeneración hidrópica de la capa basal, infiltradode linfo-plasmocitario y ausencia de signos de displasia). Su alta prevalencia (0,5-2%), su carácter recurrente y el potencial riesgo de transformación maligna explican el gran número de opciones terapéuticas disponibles.Presentamos un caso de liquen plano erosivo, de mucosa oral, resistente a múltiples tratamientos, fundamentalmente corticoideos. En el plazo de 15 días respondió a la administración de tacrolimus al 0,1% en aplicación tópica. El artículo pretende señalar la indicación novedosa del principio activo tacrolimus, un inmunosupresor inhibidor de la calcineurina, que se ha demostrado eficaz en la solución de las lesiones erosivas

The lichen planus is a mucocutaneous disease with unknown etiology and auto-immune pathogenia. There have been three variants of lichen planus: the reticular, the plaque-like and the atrophic-erosive lesions. It’s a chronic disease with acute relapses that generally affects more frecuently to women from the fourties. The diagnostic is based on the clinic identification of the lesions joined with the histopathologic study (basal cells hidropic degeneration, linfoplasmocitic infiltration and absence of displasy signs). The great number of therapeutic options are explained for its high prevalency (0.5-2%), its recurrence and its risk for malignant transformation.We present a case of oral erosive lichen planus, refractory to numerous treatments, mainly corticosteroids. During 15 days the lesion responded to the administration of a 0.1% tacrolimus in topic application. This article tries to show the new indication of tacrolimus, a calcineurin inhibitor immunosuppressor, that it is effective in the erosive lesions treatment