USMLE Rx: Week of 07/11/16

Question 1

The pulmonary arteries run with the __________ along the ___________.

Answer 1

bronchi; center of the bronchopulmonary segment

Question 2

Lymphadenopathy due to infection will most often be _________.

Answer 2

painful

Question 3

Which type of breast cancer is most common?

Answer 3

Ductal (the ducts are proDUCTive)

Question 4

Prednisone can cause what type of leukocyte abnormality?

Answer 4

Leukocytosis, due to demargination from the vessel wall

Question 5

In addition to anemia, what other symptoms will lead poisoning commonly present with?

Answer 5

Neurologic symptoms (such as ataxia) and increased bone density

Question 6

What is the typical histologic presentation of glioblastoma multiforme?

Answer 6

Central area of necrosis

Question 7

Limp in an asthmatic might indicate what medication toxicity?

Answer 7

Prednisone (which can cause avascular necrosis of the femoral head)

Question 8

Shoulder dislocation commonly injures what nerve?

Answer 8

The axillary nerve (which innervates the ????)

Question 9

Which two hepatitis viruses can cause hepatocellular carcinoma?

Answer 9

B and C

Question 10

For which hepatitis strain is there not a vaccine?

Answer 10

C

Question 11

How is sickle hemoglobin’s oxygen-saturation curve different?

Answer 11

It is normal in free molecules, but when it polymers it is right-shifted

Question 12

What two movements will be lost in radial-nerve injuries?

Answer 12

Supination of the forearm and extension of the wrist

Question 13

At which ribs are the lung fissures?

Answer 13

R: 4 and 6 (horizontal at 4 and oblique at 6)

Question 14

Tension pneumothorax can cause __________ distension.

Answer 14

jugular venous (because of the increased pressure)

Question 15

Describe ragged-red fiber myopathies.

Answer 15

Mitochondrially-inherited disorder presenting with cardiac conduction defects, ataxia, muscle weakness, and sensorineural hearing loss;

Question 16

If the stem mentions a “restrained patient,” think of _____________.

Answer 16

pulmonary embolism!!!

Question 17

What three cancers cause the most deaths in men and women?

Answer 17

M: lung > prostate > colorectal
W: lung > breast > colorectal

Question 18

What histologic renal finding can multiple myeloma produce?

Answer 18

Amyloidosis in the mesangium and subendothelial space

Question 19

Meningiomas are relatively _________; they typically have smooth demarcations and are easily resected.

Answer 19

benign

Question 20

Inulin is neither ___________.

Answer 20

reabsorbed or secreted

Question 21

In addition to sclerosis, the defining feature of FSGS is ____________.

Answer 21

hyaline deposition

Question 22

How does etoposide work and for what cancer is it commonly used?

Answer 22

It interferes with the uncoiling of DNA and it is used for small cell carcinoma

Question 23

What is a major adverse effect of chloramphenicol?

Answer 23

Aplastic anemia

Question 24

Hyperparathyroidism due to renal failure results from _______________.

Answer 24

inability to excrete phosphate, not the inability to reabsorb calcium

Question 25

Almost _______ of all brain tumors are metastatic.

Answer 25

half (with lung, brain, and melanoma being the most common)

Question 26

Tamoxifen increases risk of __________.

Answer 26

endometrial hyperplasia

Question 27

Tamoxifen inhibits what type of cell?

Answer 27

Osteoclasts

Question 28

Which hepatitis is a DNA virus?

Answer 28

HBV (it is a hepadnavirus;

Question 29

What is the only part of the hand that is cutaneously innervated by the radial nerve?

Answer 29

The dorso-lateral part

Question 30

What type of lung cancer can cause Cushing’s syndrome?

Answer 30

Small cell