ORT - Artigos publicados em revistas não indexadas
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Browsing ORT - Artigos publicados em revistas não indexadas by Subject "Bone neoplasms"
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- Large foot schwannoma with bone invasion - a case reportPublication . Santos, F; Pinheiro, M; Felicíssimo, PA rare case of a large foot schwannoma with an intraosseous component is presented. Due to suspicion of malignancy, an amputation had previously been proposed. When the patient presented to us, the prolonged clinical course as well as some elements of the imaging exams suggested benignancy and we decided for complete tumor excision. Intraoperative findings supported the benign character of the neoplasm and pathology would later confirm the diagnosis of a benign schwannoma. The outcome, at 18 months of follow-up was a fully functional limb. Recurrence must still be considered but malignant transformation is very rare in a solitary schwannoma and can be discounted. Solitary benign schwannomas have a negligible malignization potential independently of their size or osseous component. When benignancy is considered, primary total tumor excision, as part of a staged procedure, is a safe approach. It allows for a thorough pathologic examination and eventually for a definitive treatment.
- Massive Osteolytic Lesion of the Femur after Total Knee Arthroplasty.Publication . Cardoso, A; Amaro, P; Gamelas, P; Carvalho, E; Silva, R; Oliveira, MH; Jesus, MVarious failure mechanisms have been identified in total knee arthroplasty (TKA). We hereby present one case of failure, which stands out because of its rapid and destructive progression. We report the case of a 72-year-old Caucasian female patient who developed a large bone osteolytic lesion of the femur after TKA. The patient presented to our hospital 7 years after the initial surgery, complaining of persistent knee pain. The lesion affected the distal half of the femur and, after a diagnostic workup, required a resection of 20 cm and reconstruction with a tumor prosthesis. Subsequent pathological analysis revealed a reaction to cement and prosthesis components. Periprosthetic osteolysis continues to be a major problem, and a reaction to cement and prosthesis components can be an elusive cause of TKA failure.