Questões de USMLE

A 52-year-old man with a 20-year history of alcohol use disorder presents to clinic with progressive abdominal distension and lower extremity edema. He reports fatigue and early sa…

A 5-year-old boy is brought to the clinic by his parents for evaluation of constipation and a visible mass at the base of his spine. Physical examination reveals a firm, non-tender…

A 23-year-old man sustains a deep laceration across the palm while cooking. Vital signs are stable: BP 118/76 mmHg, HR 88/min, RR 16/min. During surgical repair, the surgeon observ…

A 72-year-old man presents with progressive nocturia (×4 per night) and a diminished urinary stream over 3 years. He reports incomplete emptying but denies dysuria, hematuria, or f…

A 31-year-old woman in labor undergoes cesarean delivery for arrest of descent. A biopsy specimen from the uterine wall is examined for teaching purposes. The predominant contracti…

A 54-year-old man comes to the clinic because of 4 months of progressive difficulty swallowing solid foods. He has a 30 pack-year smoking history and drinks alcohol daily. Upper en…

A 2-year-old male is brought to the pediatrician by his mother because he has had several episodes of rectal bleeding. Evaluation with a technetium-99m perfusion scan reveals a 3-c…

A 71-year-old man presents with urinary hesitancy, weak urinary stream, and nocturia ×3 per night. Vital signs: BP 138/82 mmHg, HR 76/min, RR 14/min, Temp 37.2°C. Digital rectal ex…

A 67-year-old man with a 40 pack-year smoking history presents with progressive dysphagia and unintentional 12-lb weight loss over 2 months. Endoscopy reveals an irregular, ulcerat…

A 45-year-old woman undergoes a liver biopsy for suspected cirrhosis. Microscopic examination reveals extensive fibrosis with bridging between portal tracts and central veins, alon…

A 46-year-old man with a 15-year history of heavy alcohol use presents with acute pancreatitis (BP 128/82, HR 102, RR 20, Temp 38.2°C). Serum lipase is elevated at 850 U/L; abdomin…

A 32-year-old man presents with infertility and decreased libido. Vital signs: BP 118/76, HR 72, RR 14, Temp 37°C. Semen analysis reveals markedly decreased sperm motility with nor…

A 43-year-old woman undergoes bronchoscopy for evaluation of chronic cough. A biopsy is taken from the tracheal mucosa. The pathologist notes an epithelial lining with nuclei at di…

A 35-year-old woman with a known pituitary adenoma undergoes surgery. Histologic examination of the resected tissue reveals polygonal cells with eccentric nuclei and basophilic cyt…

A 6-month-old girl is brought to the emergency department with fever (38.5°C), productive cough, and tachypnea (48 breaths/min). Her parents report recurrent episodes of sinusitis …

After an amniocentesis, a 29-year-old woman who is carrying twins learns that one fetus has XY chromosomes and the other has XX chromosomes. At 37 weeks' gestation, the female deli…

A 4-year-old boy presents with recurrent lower respiratory tract infections and a chronic productive cough with foul-smelling sputum. Vital signs show temperature 38.2°C, heart rat…

A 3-week-old infant presents to the pediatric clinic with a mother concerned about a painless, firm midline neck mass. On examination, the mass is located between the hyoid bone an…

A pregnant female comes to her physician with questions about the effect that ingested substances may have on her unborn child. The physician explains that large molecules do not p…

An autopsy is performed on a man who died of an unknown cause. The pathologist discovers that the deceased has a small atrial septal defect. The defect is seen in the portion of th…

A 5-year-old boy is brought to clinic by his parents for evaluation of developmental concerns. He was born with severe micrognathia and glossoptosis, which necessitated emergency t…

A 2-month-old male presents with a firm, non-tender midline sacrococcygeal mass noted on routine physical examination. The mass is located just superior to the coccyx. Imaging show…

A 4-week-old male infant presents to the pediatrician with a firm, painless midline neck mass that the parents first noticed 2 weeks ago. On examination, the mass is located betwee…

An intravenous pyelogram is performed on a patient to evaluate the function and structure of her kidneys. Examination of the resulting radiographs reveals that the left kidney is n…