USMLE QBANK

Which of the following is thought to be a major contributor to the  cachexia often experienced by patients with advanced cancer?

A patient, who appears to be female, is found to be 46,XY. The patient's  vagina is very shallow, ending in a blind pouch, and there are palpable   masses in the labia. The diagnosis of testicular feminization syndrome    is made. Which of the following was most likely present during the early     fetal life of this individual?

A patient develops a swollen and tender lymph node in his popliteal  fossa. An infected skin lesion in which of the following sites would most   likely induce lymphadenopathy in this region?

A 37-year-old female presents to the emergency room with a fever.  Chest x-ray shows multiple patchy infiltrates in both lungs.   Echocardiography and blood cultures suggest a diagnosis of    acute bacterial endocarditis limited to the tricuspid valve.     Which of the following is the most probable etiology?

During an intra-abdominal operation, a surgeon asks a medical student  to pass his hand toward the head, along the inner aspect of the anterior   abdominal wall, slightly to the right of the midline. The reflection of    which of the following will eventually stop the movement of the     student's hand?

A 1-year-old child develops voluminous watery diarrhea and vomiting . She is brought to the pediatrician by her parents and evaluated, then  sent home with instructions for the parents to give the child an   electrolyte replacement solution. Which of the following viruses    is the most likely cause of the child's diarrhea?

A patient with colorectal cancer develops septicemia complicated by endocarditis. You would expect the blood cultures to grow

A thyroid mass usually moves with swallowing because the thyroid gland  is enclosed by which of the following fascia?

White coat hypertension is defined as an elevation of blood pressure  resulting from the apprehension associated with visiting the doctor. It   is thought that the patient associates the physician's white coat with    distressing experiences (e.g., being vaccinated as a child), resulting     in transient hypertension. This may be viewed as a physiological      manifestation of which of the following phenomena?

A 46-year-old male with non-insulin dependent diabetes presents with a  recent onset of nausea, vomiting, abdominal pain, anorexia, and dark-colored   urine. Laboratory examination reveals an AST = 136 U/L and    an ALT = 142 U/L. Based on these findings, which of the following    oral hypoglycemic agents is the patient most likely taking?