How to create by your own a customized hip cement mega-spacer for a hip megaprosthesis two-stage revision surgery after oncologic limb-salvage surgery - Surgical technique and case report.

Managing chronic periprosthetic infections in patients who have undergone limb-salvage surgery following a malignant bone tumor with megaprosthesis often involves a two-stage revision surgery with the use of a cement-spacer. This paper show details the preparation of a self-made intramedullary metal-stabilized mega-cement spacer for patients needing a two-stage revision surgery due to infection after oncologic bone tumor resection and limb-salvage surgery with megaprosthesis and present two clinical cases treated with this technique. The report provides a practical surgical technique to create a cement hip mega-spacer using readily available tools in most orthopedic surgical settings.

Prognostic factors and survival in Ewing's sarcoma treated by limb salvage surgery.

PURPOSE: Survival in Ewing's sarcoma (ES) has increased with the use of chemotherapy. Surgical techniques such as limb salvage (LS) have been developed. Survival and adverse events have been widely studied in general series of ES, but there are few specific series of ES cases treated by LS, despite this being the most commonly used (surgical) approach. The aim of this study was to determine survival and prognostic factors in ES patients undergoing LS. PATIENTS AND METHODS: We analysed all ES patients treated between January 1984 and May 2008 and selected all those treated by systemic multimodal therapy and LS. We assessed the influence of patient characteristics, tumour parameters and therapeutic results in event-free survival (EFS). RESULTS: Ninety patients were included. Fifty of them were treated by systemic multimodal therapy and locally by LS. ean age was 20 years. Overall survival (OS) was 68.8% and EFS was 60.6% at years. In the univariate analysis, pelvic location, age and response to chemotherapy were associated with poor prognosis. After multivariate analysis, poor response to treatment, pelvis location and age between 12 and 17 years were found to be independent prognostic factors. Dissemination at diagnosis was not a prognostic factor. CONCLUSIONS: OS and EFS in ES treated by LS were similar to findings in previous ES studies. factors are no different, except for the presence of metastasis at diagnosis.

Leiomiosarcomas de grandes vasos en las extremidades inferiores / Leiomyosarcomas affecting main vessels in the lower extremities

Objetivos: Evaluar los resultados de la resección en bloque y la reconstrucción vascular de leiomiosarcomas con afectación de vasos principales en las extremidades inferiores. Material y métodos: Desde enero de 1983 a diciembre 2016 se diagnosticaron 42 pacientes con leiomiosarcomas, de los que 6 afectaban a vasos principales de las extremidades inferiores (denominados vasculares). Se registraron retrospectivamente datos epidemiológicos, estudios de imagen, cirugía realizada, tratamientos adyuvantes, complicaciones, así como las recidivas y mortalidad. Resultados: Todos los pacientes fueron afectos de leiomiosarcomas de alto grado(II-III FNCLCC), con un diámetro mayor tumoral de 9,1cm de media (6-15) y un seguimiento medio de 23 meses (7-36). La edad media fue de 64 años (29-84). El primer síntoma fue una tumoración palpable en 4 de ellos. Los otros 2 casos comenzaron con fenómenos tromboembólicos. En 5 casos el origen fueron los vasos femorales, mientras que un caso fue a nivel poplíteo. A pesar de que todos los casos preservaban la extremidad, 3 (50%) presentaron diseminación pulmonar, 2 (33%) hepática y un caso presentó recidiva local. Dos casos fueron exitus al finalizar el estudio y hubo un caso de pérdida de seguimiento. Discusión y conclusiones: Los leiomiosarcomas vasculares son tumores altamente agresivos con baja tasa de supervivencia a los 5 años. En nuestro estudio, el 50% de los pacientes se mantienen en remisión completa con un seguimiento medio de 23 meses. Es frecuente que su inicio asocie la presencia de una masa tumoral con fenómenos trombóticos (33% de nuestros casos). La cirugía de resección tumoral habitualmente compromete las estructuras vasculares principales, hecho que implica una resección y técnicas reconstructivas vasculares para el salvamento de la extremidad

Objective: To evaluate the results of bloc resection and vascular reconstruction of leiomyosarcomas with involvement of main vessels in the lower extremities. Material and methods: From January 1983 to December 2016, 42 patients with leiomyosarcomas were diagnosed. Six of these leiomyosarcomas affected main vessels of the lower extremities (called vascular). Epidemiological data, imaging studies, surgery performed, adjuvant treatments, complications, as well as recurrences and mortality were retrospectively recorded. Results: All the patients were affected by high-grade leiomyosarcomas (II-III FNCLCC classification), with a larger tumour average diameter of 9.1cm(6-15) and a mean follow-up of 23 months (7-36). The average age was 64 years (29-84). The first symptom was a palpable tumour in 4 of them. The other 2 cases debuted with thromboembolic phenomena. In 5 cases the origin was the femoral vessels, while one case was at the popliteal level. Although all cases preserved the limb, in 3 cases (50%) they presented pulmonary dissemination,2 cases (33%) hepatic dissemination and one case had local recurrence. Two cases died at the end of the study and there was one case of loss to follow-up. Discussion and conclusions: Vascular leiomyosarcomas are highly aggressive tumours with a low survival rate at 5 years. In our study, 50% of the patients remain in complete remission with a mean follow-up of 23 months. Their onset frequently associates the presence of tumour mass with thrombotic phenomena (33% of our cases). Tumour resection surgery usually compromises the main vascular structures, which implies resection and vascular reconstructive techniques to salvage the limb

Leiomyosarcomas affecting main vessels in the lower extremities. / Leiomiosarcomas de grandes vasos en las extremidades inferiores.

OBJECTIVE: To evaluate the results of bloc resection and vascular reconstruction of leiomyosarcomas with involvement of main vessels in the lower extremities. MATERIAL AND METHODS: From January 1983 to December 2016, 42 patients with leiomyosarcomas were diagnosed. Six of these leiomyosarcomas affected main vessels of the lower extremities (called vascular). Epidemiological data, imaging studies, surgery performed, adjuvant treatments, complications, as well as recurrences and mortality were retrospectively recorded. RESULTS: All the patients were affected by high-grade leiomyosarcomas (ii-iii FNCLCC classification), with a larger tumour average diameter of 9.1cm(6-15) and a mean follow-up of 23 months (7-36). The average age was 64 years (29-84). The first symptom was a palpable tumour in 4 of them. The other 2 cases debuted with thromboembolic phenomena. In 5 cases the origin was the femoral vessels, while one case was at the popliteal level. Although all cases preserved the limb, in 3 cases (50%) they presented pulmonary dissemination,2 cases (33%) hepatic dissemination and one case had local recurrence. Two cases died at the end of the study and there was one case of loss to follow-up. DISCUSSION AND CONCLUSIONS: Vascular leiomyosarcomas are highly aggressive tumours with a low survival rate at 5 years. In our study, 50% of the patients remain in complete remission with a mean follow-up of 23 months. Their onset frequently associates the presence of tumour mass with thrombotic phenomena (33% of our cases). Tumour resection surgery usually compromises the main vascular structures, which implies resection and vascular reconstructive techniques to salvage the limb.

Análisis de resultados en cirugía de revisión de márgenes de sarcomas de partes blandas / Analysis of results of soft tissue sarcoma margins revision surgery

Introducción. En ocasiones, a los hospitales especializados en sarcomas son derivados pacientes desde otros centros donde se les ha realizado una cirugía no planeada de resección de sarcoma de partes blandas. Material y métodos. Entre noviembre del 2001 y julio del 2013, 35 pacientes de este tipo fueron derivados a nuestro centro. Resultados. El 29% de los pacientes había sido intervenido sin pruebas complementarias previas. En el 76% el diagnóstico de sarcoma se descubrió en el estudio histológico postoperatorio. El sarcoma sinovial fue el más común encontrado, afectando el 38% de los pacientes. A todos ellos se les realizó cirugía de revisión de márgenes y en el 86% se realizó terapia adyuvante. El 69% de los pacientes tenían enfermedad residual hallada en la anatomía patológica. Al final del seguimiento, el 12% había presentado recidiva local, otro 12% diseminación a distancia y el 3% había fallecido. Conclusión. Dados los resultados, concluimos que cualquier tumoración de partes blandas de la que se sospeche malignidad ha de ser resecada en un centro de referencia, y si se ha producido una resección no planeada en otro centro tiene que ser derivado inmediatamente para la realización reglada de un estudio de imagen, cirugía de revisión y, si precisa, tratamiento adyuvante (AU)

Introduction. Patients from other centres where they have had an unplanned surgical resection of a soft tissue sarcoma are often referred to hospitals specialised in sarcomas. Material and methods. A study was conducted on 35 patients who required this type of surgery were referred to our center between November 2001 and July 2013. Results. Surgery had been performed on 29% of the patients without any complementary tests being done. In 75% of cases, the sarcoma diagnosis was discovered in the post-surgical histological study. Synovial sarcoma was the most common, affecting 38% of the patients. A surgical revision of the margins was performed on all of them, and adjuvant treatment was performed on 86% of them. The histopathology study found that 69% of the patients had residual disease. At the end of follow-up, 12% had a local recurrence, another 12% distant metastases, and 3% had died. Conclusion. Given the results, it is concluded that any tumour of the soft tissues in which malignancy is suspected has to be resected in a reference centre. If an unplanned esection was performed in another centre, it should be referred immediately in order to perform an imaging study, revision surgery, and if required, adjuvant treatment (AU)

Analysis of results of soft tissue sarcoma margins revision surgery. / Análisis de resultados en cirugía de revisión de márgenes de sarcomas de partes blandas.

INTRODUCTION: Patients from other centres where they have had an unplanned surgical resection of a soft tissue sarcoma are often referred to hospitals specialised in sarcomas. MATERIAL AND METHODS: A study was conducted on 35 patients who required this type of surgery were referred to our center between November 2001 and July 2013. RESULTS: Surgery had been performed on 29% of the patients without any complementary tests being done. In 75% of cases, the sarcoma diagnosis was discovered in the post-surgical histological study. Synovial sarcoma was the most common, affecting 38% of the patients. A surgical revision of the margins was performed on all of them, and adjuvant treatment was performed on 86% of them. The histopathology study found that 69% of the patients had residual disease. At the end of follow-up, 12% had a local recurrence, another 12% distant metastases, and 3% had died. CONCLUSION: Given the results, it is concluded that any tumour of the soft tissues in which malignancy is suspected has to be resected in a reference centre. If an unplanned esection was performed in another centre, it should be referred immediately in order to perform an imaging study, revision surgery, and if required, adjuvant treatment.