Bone marrow metastatic neuroendocrine carcinoma with unknown primary site: A case report and review of the literature

Table 1 Laboratory examinations of our patient

Testing items	Results
Reexamined peripheral blood count	Leukocyte 14.87 × 109/L, hemoglobin 65 g/L; platelet 20 × 109/L and neutrophil 12.46 × 109/L
Peripheral blood smear	2% promyelocyte
Coombs test	Negative
LDH	1185 U/L
ALP	355 U/L
Coagulation function	Fibrinogen 1.09 g/L, D-dimer >20000 μg/L
Serum tumor markers	Carbohydrate antigen 125 236.40 U/mL, ferroprotein > 3000 ng/mL

LDH: Lactic dehydrogenase; ALP: Alkaline phosphatase.