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Washington University Experience | NEOPLASMS (PINEAL) | Papillary Tumor Pineal Region (PTPR) | 4G Papillary Tumor of the Pineal Region (PTPR) (Case 4) SYN 2.jpg
Scattered tumor cells are slightly immunoreactive for synaptophysin. ---- Ancillary data (not shown): A chromogranin stain is negative. A stain for Ki-67 reveals a focally elevated labeling index. This tumor was diagnosed as PTPR Grade 2-3 because of the worrisome features. The subsequent course of this patient has been lost to us.
