A 59-year-old man went to his physician for a routine health

A 59-year-old man went to his physician for a routine health maintenance examination. The only abnormal physical examination finding is a positive stool guaiac test. Laboratory studies show a CBC with Hgb 10.0 g/dL, Hct 29.8&, MCV 73 fL, platelet count 300,000/microliter, and WBC count 8700/microliter. He is found on colonoscopy to have a 4 cm mass lesion arising on the mucosal surface of the transverse colon. Which of the following statements is most appropriate regarding these findings?

A This is an uncommon site for a primary malignant neoplasm

B Microscopically, the mass is probably an adenocarcinoma

C Persons who are smokers are at much greater risk to develop this lesion

D Hypercalcemia is a frequent paraneoplastic complication

E The predicted 5 year survival rate is less than 5%

B Microscopically, the mass is probably an adenocarcinoma