48 year-old nurse, with a body mass index of 31, presents for an evaluation for back pain. She relates that historically, she had a positive PPD test a year ago and did not follow-up as directed. She has recently been experiencing night sweats and coughing. An x-ray of her lumbar spine reveals osteopenia and cortical breakdown of vertebral bodies L4 and L5. Which of the following diagnosis is most suspect?
A compression fractures secondary to obesity
B degenerative joint disease
C Potts disease
D compression fractures secondary to osteoporosis
E spondylolisthesis
Answer: C
Pott's disease is TB of the spine. She could have any of the other diseases; but the question states that she had a positive PPD and did not take meds...that is the clue that she has active TB in the spine.
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