Marker for pancreatic non-functional neuro endocrine tumor (PNET) is?: (A) Chromogranin-A, (B) CD100, (C) CEA, (D) PSA
Answer is A. Ans is 'a' i.e. Chromogranin-A o Chromogranin-A (CgA) is a glycoprotein used commonly as a tumor marker in histopathology but also has elevated circulating levels in patients with both functional and non-functional PNETs.o Other markers for PNETs - pancreatic polypeptide (PPP), pancreastatin, and neuron-specific enolase (NSE)