Multiple Choice
A 56-year-old man comes to the physician due to several months of difficulty in swallowing. At first, meat would stick in his throat, and now he has difficulty swallowing all solid food and occasionally liquids. The patient coughs and sometimes aspirates food particles when eating. He has no shortness of breath, chest pain, or heartburn and has lost several pounds in the last 2 months. The patient was evaluated for persistent right ear pain 4 weeks ago, but no diagnosis could be made. His past medical history is significant for hypertension. He smokes 2 packs of cigarettes daily and consumes 6-8 bottles of beer on weekends. The patient is not sexually active. Lungs are clear to auscultation. Neck palpation shows no lymph node enlargement or thyromegaly. Endoscopy performed on this patient identifies an upper-esophageal mass with irregular contours that partially obstructs the lumen of the esophagus. Which of the following is the most likely histopathologic type of this tumor?
A) Adenocarcinoma
B) Melanoma
C) Squamous cell carcinoma
D) Stromal tumor
Correct Answer:

Verified
Correct Answer:
Verified
Q490: A randomized, double-blinded clinical trial was conducted
Q491: A 14-year-old Caucasian adolescent presents to your
Q492: A 68-year-old man with a history of
Q493: A 19-year-old woman, gravida 1 para 0,
Q494: A 32-year-old woman comes to the physician
Q496: An 18-year-old woman who recently immigrated to
Q497: A 19-year-old Caucasian male comes to clinic
Q498: A 3-day-old boy is brought to the
Q499: A 46-year-old woman comes to the office
Q500: Researchers are conducting a cross-sectional study to