Neurocysticercosis (NCC) is one of the commonest causes of symptomatic epilepsy in India and many other countries. It is caused by Taenia solium (tapeworm infection). On CT scan, signs of active (alive) worm include: 1. Perilesional edema (seen as hypodensity in plain and contrast images, 2. Enhancement of lesion (disc-like or ring like) on contrast scans, 3. Presence of scolex. Calcified lesion on CT generally indicates that the worm is inactive (dead). However, in many instances, we can see calcification and edema in the same scan. This is seen in the images above.
Treatment consists of: 1. Anti-epileptic drugs to prevent seizure recurrence, 2. Albendazole for 7-10 days (15 mg per kg body weight), 3. Steroids for 5-7 days to reduce edema.