Needed advice. ? metastatis, ?

My father aged 49 had a mild stroke on 15/10/16 and was admitted to a hospital.  He was managed conservatively to start with and thorough investigations were done.  On 18/10/16 he had an episode of GTCS and was shifted to critical care unit and anti-convulsants were added. MRI of brain was done which showed ring enhancing lesion at left post parietal lobe with internal necrotic core surrounding vasogenic oedema probably due to Tuberculosis/ Metastasis/ Brain Abscess.  USG of Abdomen showed Cholelithiasis. He was managed with IV Antibiotics  and other supportive measures.  MRI spectroscopy was done, report awaited. He also had ulcer over left lateral border of tongue.  Final diagnosis : 1. Type 2 diabetes mellitus 2. Hypertension 3. Lower respiratory tract infection 4. Cholelithiasis 5. Seizure disorder 6. Ring enhancing lesion of perietal lobe - ? Tuberculosis, ?metastatis,  ? Brain abscess Seeking forward for your kind co operation Thanks...