Multifocal Ewing sarcoma. Presentation of a pediatric case.

Authors

DOI:

https://doi.org/10.35954/SM2023.42.1.3.e501

Keywords:

Bone neoplasms, Ewing sarcoma, Neuroectodermal Tumors, Primitive, Peripheral.

Abstract

Introduction: Ewing's sarcoma is a malignant neoplasm of mesenchymal origin. At the time of diagnosis 75% of the cases are localized.

Objective: to report a case that, due to its multifocal presentation, generated diagnostic difficulties.

Clinical case: 6-year-old girl. She consulted for right hand trauma after a fall from her height 24 hours earlier, with edema, warmth and erythema in the right hand and fist, with preserved mobility. No fever. X-ray: increase in the diameter of the 3rd metacarpal, frosted image, no traces of fractures. Admitted with cellulitis. Mild microcytic anemia, hypochromic. C-reactive protein 82mg/l. Receives intravenous clindamycin 72 hours, completes 14 days orally. Persistence of alterations in fist and right hand, adds tumor of nasal root with deviation of the axis, painless. Alkaline phosphatase, lactate dehydrogenase, phosphatemia, normal calcemia. MRI: morphostructural alteration of radius, olecranon and 3rd metacarpal, fracture of olecranon and radius, periosteal reaction. Pet-Scan: extensive bone lesion in facial mass, tibiae, ulnae, right humerus and clavicle. Biopsy 3rd metacarpal: small cell tumor, blue round, CD 99 and vimentin positive. Polychemotherapy and radiotherapy were started without complications.

Conclusions: it is frequent that the initial clinical manifestations are confused with more frequent entities, such as post-traumatic and/or inflammatory, as occurred in this case. Subsequently, the appearance of new lesions and compromise of the general condition guided the diagnostic approach of the tumor pathology. Confirmation requires anatomopathological study with immunohistochemical study. The presence of bone metastases constitutes a poor prognostic factor and hinders the therapeutic approach.

Received for review: January 2023.
Accepted for publication: March 2023.
Correspondence: Bulevar Artigas 1590. Montevideo, Uruguay. Tel: (+598) 27091443.
Contact e-mail: anitacasuriaga7@gmail.com

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Author Biographies

Evelyn Villalba , Doctor en medicina, especialidad pediatría. Facultad de Medicina, Universidad de la República. Montevideo, Uruguay

CONTRIBUYÓ AL MANUSCRITO EN: Concepción, diseño, redacción, revisión crítica.

Ana Laura Casuriaga Lamboglia, Doctor en medicina, especialidad pediatría. Profesora Adjunta de la Clínica Pediátrica C, Facultad de Medicina. Universidad de la República

CONTRIBUTED TO THE MANUSCRIPT IN: Conception, design, drafting, critical revision and approval of the final version.

Agustín Dabezies , Doctor en medicina, especialidad pediatría y hemato-oncología Pediátrica. Fundación Pérez Scremini. Montevideo, Uruguay.

CONTRIBUTED TO THE MANUSCRIPT IN: Conception, design, writing, critical revision.

Fabiana Morosini , Doctor en medicina, especialidad pediatría y hemato-oncología Pediátrica. Fundación Pérez Scremini. Montevideo, Uruguay.

CONTRIBUTED TO THE MANUSCRIPT IN: Conception, design, writing, critical revision.

Gustavo Giachetto , Doctor en medicina, especialidad pediatría. Profesor Adjunto de la Clínica Pediátrica C, Facultad de Medicina. Universidad de la República

CONTRIBUTED TO THE MANUSCRIPT IN: Conception, design, writing, critical revision.

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Published

2023-04-26 — Updated on 2023-05-30

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How to Cite

1.
Villalba E, Casuriaga Lamboglia AL, Dabezies A, Morosini F, Giachetto G. Multifocal Ewing sarcoma. Presentation of a pediatric case. Salud Mil [Internet]. 2023 May 30 [cited 2026 Apr. 17];42(1):e501. Available from: https://revistasaludmilitar.uy/ojs/index.php/Rsm/article/view/388

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