The only definitive way to determine the presence of malignant ...

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The only definitive way to determine the presence of malignant cells is to perform
 
  a. laboratory tests.
  b. a tissue biopsy.
  c. an MRI.
  d. a CT scan.

Question 2

Recent exacerbation of a patient's mitral valve regurgitation prompted her cardiologist to perform a mitral valve replacement in which the patient received a mechanical valve.
 
  In the weeks following the patient's surgery, which of the following blood tests will be most relevant to the patient's potential complications?
  A) Blood urea nitrogen (BUN) and creatinine
  B) Serum potassium level
  C) White blood cell (WBC) differential
  D) International normalized ratio (INR)

[Kjones0604]

Answer to Question 1

B
The only definitive way to determine the presence of malignant cells is to perform a tissue biopsy (the removal of a small piece of living tissue from an organ or other part of the body for microscopic examination; used to confirm or establish a diagnosis, establish prognosis, or follow the course of a disease).

Answer to Question 2

D

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TYSM

[TheNamesImani]

Excellent