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      Adamantinoma en pediatría: Presentación de caso Translated title: Pediatric adamantinoma: Case report

      case-report

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          Abstract

          El adamantinoma es un tumor primario de los huesos largos, que afecta principalmente la diálisis de la tibia, y es extremadamente raro en pediatría. Se presenta a partir de la segunda década de vida, con un ligero predominio en el sexo masculino. Se trata de un tumor de bajo grado, con alta agresividad a nivel local y bajo índice de metástasis y recurrencia una vez resecado en forma completa. Su diagnóstico resulta difícil, no solo por tratarse de una patología poco frecuente en pediatría, sino también por la dificultad para el diagnóstico diferencial con otras lesiones benignas. Presentamos el caso de un paciente de 15 años, con una tumoración indolora de larga evolución en la tibia distal, cuyo diagnóstico fue confirmado histológicamente con la pieza de amputación, ya que los estudios complementarios y las dos biopsias iniciales no fueron concluyentes. Aunque la mayoría de la bibliografía publicada consta de reportes de casos, y muy pocos en pacientes pediátricos, es de común acuerdo la dificultad para arribar al diagnóstico de adamantinoma.

          Translated abstract

          Adamantinoma is a primary tumor of long bones, which affects mainly the shaft of the tibia, and is extremely rare in pediatrics. It frequently presents during the second decade of life, with a slight predominance in males. It is a low grade tumor, with local aggressiveness and low rate of metastasis and recurrence once it is completely removed. Its diagnosis is difficult, not only because it is a rare disease in children, but also because of the difficulty in the differential diagnosis with other benign lesions. We report the case of a 15-year-old patient with a painless swelling of the distal tibia, whose diagnosis was confirmed with the piece of amputation, as imaging features and both initial biopsies were not enough to achieve diagnosis. Though most of the literature consists of case reports, and very few in pediatric patients, they all agree on the difficulty in achieving the diagnosis of adamantinoma.

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          Most cited references17

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          Adamantinoma, osteofibrous dysplasia and differentiated adamantinoma.

          For just over 100 years, adamantinoma has been recognized as a primary bone tumor with epithelial characteristics and predominantly involving the tibia. Osteofibrous dysplasia is a fibro-osseous lesion also predominantly confined to the tibia with radiologic features similar to those of adamantinoma. This lesion has been shown by immunohistochemical studies to frequently contain cytokeratin-positive epithelial cells. More recently, a third group of cases with clinical and radiologic features similar to those of osteofibrous dysplasia have demonstrated more overt strands of epithelial cells within a fibro-osseous background and have been categorized as "differentiated", "regressive", "juvenile intracortical" or "osteofibrous dysplasia-like" adamantinoma. Cytokeratin subset immunohistochemical stains and cytogenetic studies performed in recent years suggest a common histogenesis for these three entities. This article reviews the clinical, radiologic and pathologic features of these entities as well as their prognostic significance. It also reviews the results of the immunohistochemical and cytogenetic studies which establish a common histogenetic relationship.
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            Islet cell neogenesis in the pancreas.

            The beta cell population of the endocrine pancreas may expand by either of two processes, neogenesis or replication. While replication requires the existence of an already differentiated beta cell, neogenesis depends on the presence of active stem cells. Since the replicative activity of highly specialized cells such as beta cells seems to be limited, it is interesting to study the potential of the endocrine pancreas for beta cell neogenesis. In this article we review both the current state of knowledge of beta cell neogenesis under natural conditions and in response to stimulation, and the significance of neogenesis for beta cell growth in health and disease.
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              Clinicopathological features, diagnosis, and treatment of adamantinoma of the long bones.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                aap
                Archivos argentinos de pediatría
                Arch. argent. pediatr.
                Sociedad Argentina de Pediatría (Buenos Aires )
                1668-3501
                January 2015
                : 113
                : 1
                : e26-e30
                Affiliations
                [1 ] Hospital Nacional de Pediatría Prof. Dr. Juan P. Garrahan
                [2 ] Hospital Nacional de Pediatría Prof. Dr. Juan P. Garrahan
                [3 ] Hospital Nacional de Pediatría Prof. Dr. Juan P. Garrahan
                Article
                S0325-00752015000100016
                10.5546/aap.2015.e26
                d0c67541-e12d-4fc9-a4dc-f1bdf52b5061

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Argentina

                Self URI (journal page): http://www.scielo.org.ar/scielo.php?script=sci_serial&pid=0325-0075&lng=en
                Categories
                PEDIATRICS

                Pediatrics
                Adamantinoma,Bone tumor,Low grade tumor,Pediatrics,Tumor óseo,Tumor de bajo grado,Pediatría
                Pediatrics
                Adamantinoma, Bone tumor, Low grade tumor, Pediatrics, Tumor óseo, Tumor de bajo grado, Pediatría

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