Primary malignant rhabdoid tumor of the brain: CT and MR findings
Yonsei Medical Journal
;
: 8-16, 2000.
Artigo
em Inglês
| WPRIM
| ID: wpr-41102
ABSTRACT
PURPOSE:
To describe the CT and MR findings of primary malignant rhabdoid tumor (MRT) of the brain, which is a rare but very aggressive neoplasm in childhood. MATERIALS ANDMETHODS:
Retrospectively, we evaluated the CT and MR findings of 5 patients of primary MRT of the brain with a review of clinical records.RESULTS:
The primary MRTs of the brain were large (n = 4) with a tendency to be associated with necrosis, hemorrhage (n = 2) and calcification (n = 2). Solid components of the tumor showed increased attenuation on precontrast CT scan and iso- or slightly hyper-signal intensity on T2-weighted images probably due to hypercellularity. Solid components of the tumor were also well enhanced on contrast-enhanced CT scan (n = 5) and MRI (n = 2). In 1 case with intratumoral bleeding, MR findings were variable on T1-weighted and T2-weighted images. Intracranial and intraspinal metastasis were found in 2 cases on preoperative MR studies. Follow-up CT and MR studies showed recurrence of the tumor and/or leptomeningeal metastasis in 3 cases.CONCLUSIONS:
Although CT and MR findings of primary MRT of the brain are nonspecific, a tendency toward large size, calcification and intratumoral bleeding may be attributed to CT and MR findings. The solid components of tumors could present hyperdense on precontrast CT scan and iso- or slightly hyper-signal intensity on T2-weighted MR image. Preoperative and follow-up MR studies are important to detect metastatic foci.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Neoplasias Encefálicas
/
Imageamento por Ressonância Magnética
/
Tomografia Computadorizada por Raios X
/
Estudos Retrospectivos
/
Adolescente
/
Tumor Rabdoide
Tipo de estudo:
Estudo diagnóstico
/
Estudo observacional
Limite:
Criança
/
Criança, pré-escolar
/
Feminino
/
Humanos
/
Lactente
/
Masculino
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2000
Tipo de documento:
Artigo
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