Brain tumor dataset image labeled "no tumor"

Hello,

To be upfront, I am not a doctor, I'm a computer engineer. I'm making a neural network to identify brain tumors and I got this dataset from Kaggle.

The images are simply labeled "yes" or "no" for tumors, although I'm not sure how other abnormalities would be labeled. Some images are obviously tumors, or at least have obvious things wrong with them, from my untrained eye, but others are more ambiguous.

https://preview.redd.it/22v72wg4g6k81.jpg?width=276&format=pjpg&auto=webp&s=912fbf6c35da3d0668b6de8e9772c24a56222a5e

The image in this post is labeled "no" for tumors. However, there really does seem to be something wrong with it. Most other "no" images preserve a somewhat symmetrical shape, but this one has a big white spot on the right hemisphere.

Is that a tumor, some other condition, or somehow normal brain anatomy?

EDIT: I had not sent a message to the mods before posting this, as I had not seen the Additional Information. I apologize for that, I didn't know it was a problem. I have sent them a message now.

submitted by /u/Seth_Kresnik
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source https://www.reddit.com/r/Radiology/comments/t1wsqi/brain_tumor_dataset_image_labeled_no_tumor/

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