The clinical efficacy and outcomes of pazopanib treatment for metastatic extraosseous Ewing sarcoma remain unclear. We herein report a case of heavily pre-treated metastatic extraosseous Ewing sarcoma in which pazopanib treatment achieved a significant improvement. A 17-year-old girl was referred to our hospital due to metastatic extraosseous Ewing sarcoma. The initial cytotoxic chemotherapy was temporarily effective, however, her disease eventually progressed, and she was subsequently treated with pazopanib. The recurrent tumor showed a marked response to pazopanib therapy; the therapeutic effect has lasted for more than 26 months. The present case suggests that pazopanib may be a therapeutic option for extraosseous Ewing sarcoma.
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http://dx.doi.org/10.2169/internalmedicine.9879-17 | DOI Listing |
J Neurosurg Case Lessons
January 2025
Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.
Background: The diagnosis of intracranial extraosseous Ewing's sarcoma (EES) poses challenges due to the absence of specific clinical and imaging features prior to surgery. It is crucial to differentiate the tumor from other small round cell malignancies postoperatively.
Observations: A 7-year-old patient was admitted to the authors' hospital due to the in situ recurrence of a posterior fossa tumor more than 1 month after the initial surgery for headache.
J West Afr Coll Surg
August 2024
Department of Surgical Oncology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Intra-neural Ewing sarcoma is an extremely rare tumour and only a few isolated case reports exist in the literature. A 32-year-old South Asian male presented with wrist and finger drops of 3 months duration. Further evaluation with ultrasonography and magnetic resonance imaging revealed a tumour of the radial nerve in the arm.
View Article and Find Full Text PDFSkeletal Radiol
December 2024
Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA.
The case report discusses xanthogranulomatous osteomyelitis, a rare inflammatory bone condition that can resemble malignancy on imaging studies. The report details a case of a 42-year-old woman with left leg pain, swelling, and redness lasting 4 months. Imaging revealed a lytic lesion in the left tibia with endosteal erosion, and MRI showed extraosseous soft tissue extension.
View Article and Find Full Text PDFDiagnostics (Basel)
November 2024
Second Department of Pathology, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 15772 Athens, Greece.
Ewing sarcomas are rare tumors arising mainly in the bones and the surrounding soft tissues. Primary extraosseous Ewing sarcomas have also been described in several other organs and locations other than bones, including the pancreas. These tumors have well-defined histological, immunohistochemical, and molecular characteristics.
View Article and Find Full Text PDFCureus
October 2024
General Surgery, Sri Ramaswamy Memorial (SRM) Institute of Science and Technology, Chengalpattu, IND.
Extraosseous Ewing's sarcoma (EES) is a rare form of Ewing's sarcoma that arises outside the bones in soft-tissue structures. It is thought to result from a genetic abnormality involving the fusion of the EWSR1 gene with various partner genes, most commonly the FLI-1 gene. Common symptoms include pain, swelling, and sometimes a palpable mass at the site of the tumor.
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