A 17-year-old boy comes to the emergency department because of severe thirst and weakness and a 4-kg (1.8-lb) weight loss over the past 36 hours. He began having
A 2-year-old boy is brought to the emergency department because of shortness of breath and left-sided abdominal pain for 3 hours. He appears pale. Physical examination shows hypotension
A 4-year-old boy has delayed motor development and choreoathetosis. He had normal development at birth. He chews his fingers and lips, which has resulted in tissue loss. He
A 37-year-old man comes to the physician because of a 6-month history of chest pain that occurs when he swallows food; he has had a 9-kg (20-lb) weight
A 5-month-old girl has bilateral retinoblastoma. Neither parent has a history of having had retinoblastoma. Chromosomal analysis of the patient’s stimulated peripheral blood lymphocytes is done; the photograph
A 32-year-old woman with schizophrenia is brought to the physician because of rapid heartbeats, sweating, muscle rigidity, and confusion for 1 day. Medications include acetaminophen for dysmenorrhea, haloperidol,
A 25-year-old woman is brought to the emergency department 1 hour after she fainted. She has had mild intermittent vaginal bleeding,sometimes associated with lower abdominal pain, during the
An investigator is studying the effect of the number of hours watching television (Factor A) on the percent of hemoglobin A1c in people with type 2 diabetes mellitus. Two
A 30-year-old woman has anxiety about episodes of abdominal pain that have alternated with diarrhea and constipation over the past year. She often has these episodes when she
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