Add like
Add dislike
Add to saved papers

Imaging features of rosette-forming glioneuronal tumours.

AIM: To describe the imaging features of rosette-forming glioneuronal tumours (RGNTs) to enable accurate diagnosis.

MATERIALS AND METHODS: Image data and clinical findings for seven patients with histopathologically confirmed RGNTs were studied comprehensively.

RESULTS: Six neoplasms were located near the midline and all were relatively well circumscribed. Most lesions were hypointense on T1-weighted images and hyperintense on T2-weighted images. Furthermore, five tumours were hypointense on diffusion-weighted imaging (DWI). On computed tomography (CT), the solid tumour portions showed hypo-attenuation compared with brain parenchyma. Obvious calcification was found in two cases, and hydrocephalus was seen in five. Cerebrospinal fluid (CSF) dissemination and multiple satellite lesions were not observed in these cases. Haemorrhage was found in one case. The "green bell pepper sign" was present in five cases on gadolinium-enhanced magnetic resonance imaging (MRI). Each of the patients accepted surgical treatment, and no recurrences occurred during follow-up.

CONCLUSION: RGNTs are very rare mixed glioneuronal tumours and mostly affect young people. They are usually hypointense on T1-weighted images and DWI, hyperintense on T2-weighted images, and hypo-attenuated on CT images. The "green bell pepper sign" after gadolinium enhancement, intratumoural haemorrhage, CSF dissemination, and multiple satellite lesions provide additional clues to the correct diagnosis. A relatively well-demarcated tumour with these features and a midline location should raise suspicion of an RGNT.

Full text links

We have located links that may give you full text access.
Can't access the paper?
Try logging in through your university/institutional subscription. For a smoother one-click institutional access experience, please use our mobile app.

For the best experience, use the Read mobile app

Mobile app image

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app

All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

By using this service, you agree to our terms of use and privacy policy.

Your Privacy Choices Toggle icon

You can now claim free CME credits for this literature searchClaim now

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app