Atypical Teratoid/Rhabdoid Tumors in Adult Patients: CT and MR Imaging Features
| Autor: | Lu Jun Han, J. Zhang, Pei-Hong Wu, Xue Lin Zhang, Xiaofei Lv, Yingwei Qiu, W. Xiong, Chuan miao Xie, W. Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Adult
Male Pathology medicine.medical_specialty Calvaria Fluid-attenuated inversion recovery Central necrosis Sensitivity and Specificity Young Adult medicine Humans Radiology Nuclear Medicine and imaging Rhabdoid Tumor Adult patients business.industry Brain Neoplasms Rhabdoid tumors Teratoma Brain Reproducibility of Results Middle Aged Mr imaging Magnetic Resonance Imaging medicine.anatomical_structure Rim enhancement Female Neurology (clinical) business Tomography X-Ray Computed |
| Zdroj: | AJNR Am J Neuroradiol |
| Popis: | Primary AT/RT is a rare highly malignant tumor of the CNS, usually occurring in children younger than 5 years of age. The objective of this study was to characterize the CT and MR imaging findings in a series of 5 adult patients with pathologically proved AT/RT. All 5 AT/RTs were supratentorial. In 2 patients who underwent nonenhanced CT, the tumors appeared isoattenuated, and 1 of the 2 tumors contained calcifications. Solid portions of the tumors on MR imaging were isointense on T1-weighted, T2-weighted, and FLAIR images, and 1 case showed restricted diffusion on DWI. The tumors also demonstrated a bandlike rim of strong enhancement surrounding a central cystic area on contrast-enhanced T1-weighted imaging. One tumor was associated with destruction of the calvaria. Although AT/RTs can have nonspecific findings, the tumors in our series were large and isointense on T1-weighted, T2-weighted, and FLAIR images with central necrosis and prominent rim enhancement. |
| Databáze: | OpenAIRE |
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