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I had a detailed look at the contrast images of your mother (attachment removed to protect patient identity).
There appears to be light gray to black areas seen in the central portion of T1 and the left side of T2 vertebral bodies. These findings were not clearly seen in the previous scan.
There was even a vague appearance seen in a small portion of the C7 vertebra on the right side of the body, but nothing abnormal as such.
After a thorough examination of the contrast pictures of MRI (magnetic resonance imaging), I observed, that the contrast sequences do not highlight the lesion, just the way it should in case of a tumor or cancerous area present. It seems to be due to marrow changes.
According to my knowledge, on T2 sequence, it happens to be non specific, benign signal abnormalities seen in more than one vertebra which may not cause severe pain on the left side of neck.
I would like to suggest you to get another MRI scan in a period of three to six months time.