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Vol. 20. Issue 6.
Pages 550-554 (January 2009)
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Vol. 20. Issue 6.
Pages 550-554 (January 2009)
Multifocal epithelioid glioblastoma mimicking cerebral metastasis: case report
Glioblastoma epiteloide multifocal simulando metástasis cerebrales. Presentación de un caso
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J. Gasco
,**,
Corresponding author
jagascot@utmb.edu

Corresponding author: The University of Texas Medical Branch. Division of Neurosurgery. 301 University Boulevard. Galveston, Texas 77555- 0517.
, B. Franklin*, G.N. Fuller***, P. Salinas*, S. Prabhu**
* Division of Neurosurgery, The University of Texas Medical Branch, Galveston. Texas
** Departments of Neurosurgery, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
*** Departments of Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
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Summary
Objective

Epithelioid glioblastoma is a rare morphologic subtype of glioblastoma that closely mimics metastatic carcinoma or metastatic melanoma histologically. All previous case reports of this unusual glioblastoma variant have been solitary lesions. We report here the first case to our knowledge of multifocal epithelioid glioblastoma mimicking cerebral metastasis.

Clinical presentation

A 67-year-old man with a prior history of mycosis fungoides, a common form of cutaneous T-cell lymphoma, presented with memory loss and impaired peripheral vision. Two discrete brain lesions highly suspicious for metastases were identified by magnetic resonance imaging (MRI).

Intervention

The patient underwent two separate craniotomies; both lesions were successfully resected in toto with an excellent post-surgical outcome.

Conclusion

Epithelioid glioblastoma is one of the rarest morphologic subtypes of glioblastoma. Here we describe the first case to our knowledge of multifocal epithelioid glioblastoma that convincingly mimicked a secondary metastatic process. Multifocal epithelioid glioblastoma should be included in the differential diagnosis of patients who present with multiple discrete brain lesions. An attempt at gross total resection is recommended when anatomically feasible for definitive histopathological diagnosis and to improve progression free survival of patients who present with similarly ambiguous and potentially misleading multiple lesions.

Key words:
Epithelioid glioblastoma
Immunohistochemistry
Neoplasm
Metastasis
Resumen
Objetivo

El glioblastoma epiteloide es un subtipo morfológico poco común del glioblastoma que puede imitar al carcinoma o melanoma metastásico histológicamente. Todos los casos reportados de esta variante inusual de glioblastoma han sido lesiones solitarias. Presentamos el primer caso de glioblastoma multifocal epiteloide imitando metástasis cerebral.

Presentación clínica

Varón de 67 años con historia previa de micosis fungoide, una forma común de linfoma cutáneo de células T, cuyos síntomas fueron pérdida de memoria y alteraciones del campo visual periférico. Dos lesiones sospechosas de metástasis fueron identificadas por resonancia magnética.

Intervención

Mediante dos craneotomías independientes, ambas lesiones se resecaron in toto con buen resultado post-quirúrgico.

Conclusión

El glioblastoma epiteloide es uno de los subtipos morfológicos mas raros de glioblastoma. Los autores describen aquí el primer caso de glioblastoma epiteloide multifocal con apariencia de metástasis secundaria. Este diagnóstico debe ser incluido en el diferencial de pacientes con lesiones multifocales. El intento de resección total se recomienda cuando éste sea viable para obtener un diagnóstico definitivo así como para mejorar la supervivencia libre de enfermedad en pacientes cuya presentación incluya lesiones múltiples que puedan dirigir a un tratamiento inadecuado.

Palabras clave:
Glioblastoma epiteloide
Inmunohistoquímica
Neoplasia
Metástasis

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