2016
DOI: 10.1016/j.jcot.2016.02.010
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Primary leiomyosarcoma of femur

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Cited by 5 publications
(9 citation statements)
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“…Actually, there are two theories regarding the origin of primary bone LMS: the first suggests that vascular smooth muscle cells from the bone are involved; the second theory sustained the origin from intermediate cells, especially fibroblasts, who are able to differentiate in smooth muscle cells who synthesize connective tissue matrix, and myofilaments [ 6 , 7 , 8 ]. These second theory is sustained by the fact that many studies demonstrate the presence of fibroblasts in different differentiation states in this type of tumor.…”
Section: Discussionmentioning
confidence: 99%
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“…Actually, there are two theories regarding the origin of primary bone LMS: the first suggests that vascular smooth muscle cells from the bone are involved; the second theory sustained the origin from intermediate cells, especially fibroblasts, who are able to differentiate in smooth muscle cells who synthesize connective tissue matrix, and myofilaments [ 6 , 7 , 8 ]. These second theory is sustained by the fact that many studies demonstrate the presence of fibroblasts in different differentiation states in this type of tumor.…”
Section: Discussionmentioning
confidence: 99%
“…Mitotic activity is observed, including atypical forms in high-grade tumors [ 10 , 13 , 14 ]. In the stroma, there can be identified hyalinized areas, coagulative tumor necrosis and myxoid areas; chronic inflammation can be present, usually focally occasionally there can be “hemangiopericytomas” vessels [ 7 , 10 , 13 , 14 ]. Regarding the immunophenotype, the cells present with smooth muscle differentiation: positive, diffuse staining with desmin, h-caldesmon, SMA [ 1 ].…”
Section: Discussionmentioning
confidence: 99%
“…18 Histológicamente, se caracteriza por la ausencia de matriz condral u osteoide, con infiltración del hueso trabecular, áreas de necrosis o hemorragia, presencia de células fusiformes en general, que se encuentran dispuestas en fascículos desorganizados, con intersecciones en ángulos perpendiculares, atipia celular, pleomorfismo nuclear con núcleos en forma de cigarro, abundante citoplasma eosinofílico y fibrilar, con un perfil inmunohistoquímico para actina, músculo liso y marcadores tumorales como actina, desmina, alfa actina de músculo liso, h-caldesmon, vimentina positivos en tinción. 1,2,5,6,[9][10][11][12] En nuestra paciente, se encontró en el estudio histopatológico la presencia de células fusiformes con extremos romos, citoplasma rosado con áreas vacuoladas organizadas en fascículos, núcleos tumorales moderadamente pleomórficos, actividad mitótica variable, con un rango de 0 a 5, y áreas de necrosis del 5%, con positividad para actina muscular, h-caldesmon, y miosina, lo que corresponde a lo descrito en la literatura. 1,2,5,6,[9][10][11][12] La escisión quirúrgica con márgenes amplios se considera el patrón de oro en el manejo de esta patología, pues asegura un tratamiento curativo.…”
Section: Discussionunclassified
“…1,2,5,6,[9][10][11][12] En nuestra paciente, se encontró en el estudio histopatológico la presencia de células fusiformes con extremos romos, citoplasma rosado con áreas vacuoladas organizadas en fascículos, núcleos tumorales moderadamente pleomórficos, actividad mitótica variable, con un rango de 0 a 5, y áreas de necrosis del 5%, con positividad para actina muscular, h-caldesmon, y miosina, lo que corresponde a lo descrito en la literatura. 1,2,5,6,[9][10][11][12] La escisión quirúrgica con márgenes amplios se considera el patrón de oro en el manejo de esta patología, pues asegura un tratamiento curativo. Debe reservarse la amputación en casos en que se encuentre comprometido el paquete neurovascular o exista un compromiso extenso en tejidos blandos.…”
Section: Discussionunclassified
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