This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Medicine
[{'content': 'All except are features plummer vinson syndrome: (Repeat) \nSelect and explain. \nA. Hypertrophy of oral mucosa, B. Dysphagia, C. Glossitis, D. Iron deficiency anemia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans: A (Hypertrophy of oral mucosa) Ref: Harrison's Principles of Internal Medicine, 18edExplanation:Plummer-Vinson syndrome (PVS)Also called Paterson-Brown-Kelly syndrome or sideropenic dysphagiaIt is PremalignantPresents as a triad ofDysphagiaEsophageal websIron deficiency anemiaIt most usually occurs in postmenopausal women.Clinical featuresBurning sensation with the tongue and oral mucosaAtrophy of lingual papillae produces a smooth, shiny, red dorsum of the tongue.DysphagiaPainWeaknessOdynophagiaAtrophic glossitisAngular stomatitisThe condition is associated with koilonvchia, glossitis, cheilitis, and splenomegaly.Hemogram - Microcytic hypochromic anemia suggestive of Iron deficiencyIncreased risk of squamous cell carcinoma of Esophagus", 'role': 'assistant'}]