CEACAM5 and neoplasm: Among serologic tumor markers, human epididymis protein 4 (HE4), squamous cell carcinoma associated antigen (SCC), carbohydrate antigen 19–9 (CA 19–9), cytokeratin 19 fragment (CYFRA 21–1), and neuron specific enolase (NSE) levels were within acceptable limits, but carbohydrate antigen 72–4 (CA 72–4) level was 36.56 U/ml (normal range [NR]: 0–6.9 U/ml) and carcinoembryonic antigen (CEA) level was 20.42 ng/ml (NR: 0–5.2 ng/ml).