Thank you for posting your query on DoctorSpring.com.
I have noted the details of your mother's case, as well as the reports of the multiple brain scans.
The tumor has overall increased in size, but only to a small extent. This shows that it is cancerous but not highly malignant (cancerous). It seems to be a grade 2 tumor. (Grade 4 is the fastest growing).
Enhancement and nodular enhancement patterns on MRI indicate that the tumor is active, and there are chances in that it would continue to grow. In contrast, a scar or inactive tissue would show no enhancement.
Absence of nodular enhancement is not a significant issue. This is because we know there is an active tumor and it has been confirmed by a biopsy too. Important point here is the size of tumor.
Presence of cyst reflect collection of brain CSF (cerebrospinal fluid), and it is benign (not cancer). This is also a point in support of the fact that this tumor is not very cancerous.
Meth-hemoglobin and hemosiderin are blood products and reflect old areas of haemorrhage of bleeding. These are not related to the tumor.
Yes, if cysts are not there, they would not be reported.
I hope this helps. Feel free to ask queries.
Dr. Sudhir Kumar MD (Medicine), DM (Neurology)
Senior Consultant Neurologist.