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  • Title: Multicentric reticulohistiocytosis revealing a ductal breast cancer in situ: A case report with dermoscopic and histopathological findings.
    Author: Palma Peña S, Neely Erdos G, Buchroithner Haase C, Pinto Viguera C.
    Journal: Medwave; 2024 Jun 19; 24(5):e2914. PubMed ID: 38896878.
    Abstract:
    Multicentric reticulohistiocytosis is a rare non-Langerhans cell histiocytosis of unknown etiology. It is classified as multicentric because of multisystem involvement. The disease predominantly affects the skin and joints, but visceral involvement is possible. Multiple erythematous-brownish, pruritic nodules and papules on the face, hands, neck, and trunk are characteristic. It is associated with autoimmune diseases, or malignant neoplasms are seen in 20% to 30% of patients with multicentric reticulohistiocytosis. The diagnosis is based on histopathology of affected tissues. As it is an underreported disease, there is no standardized treatment. A case of multicentric reticulohistiocytosis is reported as a paraneoplastic manifestation of ductal breast cancer, being successfully treated with no recurrence after two years of follow-up. Few cases of multicentric reticulohistiocytosis associated with breast cancer have been reported in the literature. La reticulohistiocitosis multicéntrica es una enfermedad inflamatoria, una histiocitosis de células no Langerhans, poco frecuente y de etiología desconocida. Se clasifica como multicéntrica al presentar compromiso multisistémico. La enfermedad afecta predominantemente a la piel y las articulaciones, pero es posible la afectación visceral. Las manifestaciones cutáneas se caracterizan por múltiples nódulos y pápulas de color eritemato-marronáceas, pruriginosas en la cara, manos, cuello y tronco. Se asocia a enfermedades autoinmunes y neoplasias malignas, observándose entre el 20 y el 30% de los pacientes con reticulohistiocitosis multicéntrica. Su diagnóstico se realiza sobre la base de la histopatología de tejidos afectados. Al ser una enfermedad poco reportada, no existe tratamiento estandarizado. Se reporta un caso de reticulohistiocitosis multicéntrica como manifestación paraneoplásica a un cáncer ductal de mama, siendo tratadas con éxito, sin recidivas luego de dos años de seguimiento. Pocos casos se han reportado en la literatura de reticulohistiocitosis multicéntrica asociado a cáncer mamario.
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