This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Plummer-Vinson sndrome is an- 
Select and explain. 
A. Iron-deficiency anemia, B. Aplastic anemia, C. Vitamin dificiency, D. Increased hemoglobin
A: Iron-deficiency anemia
Answer: A: Iron-deficiency anemia 
Explanation: Plummer-Vinson syndrome (PVS), a rare clinical condition, is characterized by a triad of dysphagia, iron deficiency anemia and esophageal web in the post-cricoid region. It was first described over a century ago. Thecondition has been repoed most commonly in thin-built, middle-aged, white women.