The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 52-year-old man with Crohn disease comes to the physician because of a 1-week history of dysuria and urinary urgency. He had been treated for urinary tract infections twice in the past 6 months. He is currently taking infliximab. Cystoscopy shows pearl-like plaques on the bladder wall. Biopsy of these lesions shows a focal layer of stratified squamous epithelium with hyperkeratosis. If the patient's bladder finding is caused by a vitamin deficiency, which of the following features is also most likely to be seen?   (A) Carpopedal spasm   (B) Photodermatitis   (C) Night blindness   (D) Intracranial hypertension
['(C) Night blindness <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Carpopedal spasm \n (B) Photodermatitis \n (C) Night blindness \n (D) Intracranial hypertension <> possible answers', "  A 52-year-old man with Crohn disease comes to the physician because of a 1-week history of dysuria and urinary urgency. He had been treated for urinary tract infections twice in the past 6 months. He is currently taking infliximab. Cystoscopy shows pearl-like plaques on the bladder wall. Biopsy of these lesions shows a focal layer of stratified squamous epithelium with hyperkeratosis. If the patient's bladder finding is caused by a vitamin deficiency, which of the following features is also most likely to be seen? <> context@"]