We report an unusual case of a recurrent TRIPLE TAKE 23 fourth ventricular anaplastic ependymoma with prominent chondroid metaplasia in a 16-year-old male.On initial presentation, the patient had a WHO Grade II tumor.However, at recurrence Coffee Grinders 1 year later, the tumor progressed to WHO Grade III tumor with more cellularity, necrosis and brisk mitotic activity.
Chondroid metaplasia was present in both the initial and recurrent tumors.