1 MCQs in Surgery for NEET PG
A 68-year-old man presents with a 3-month history of fatigue and weight loss. Laboratory investigation reveals microcytic iron-deficiency anemia (Hb 8.2 g/dL, ferritin 8 ng/mL) without overt gastrointestinal bleeding. Colonoscopy reveals the structure marked **A** in the diagram—a large fungating polypoid mass in the cecum with friable surface and contact bleeding. Biopsy confirms moderately-differentiated adenocarcinoma. Which of the following best describes the most likely molecular pathogenesis underlying this right-sided cecal malignancy?
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