You Be the Doctor

Here's a one question quiz, just to get your lateral thinking skills percolating:

A 57 year old man with stage IV non-small cell lung cancer metastatic to the upper thoracic spine and contralateral lung has recently finished a course of palliative chemotherapy. His follow-up scans show stable disease, which means the tumors are not 50% smaller, but also not 25% bigger.

Two months after his last chemotherapy treatment, during a routine follow-up visit he complains of five days of severe pain in the right sacroiliac region, radiating somewhat laterally to the right flank.

As his medical oncologist, what would you do next in order to find the cause of his pain?

A. CT scan of the lumbosacral spine
B. MRI of the lumbosacral spine
C. CT scan of the abdomen/pelvis
D. Bone scan
E. Fusion PET/CT scan
F. Rent several old episodes of Marcus Welby, M.D. for guidance
G. None of the above

The answer can be found in the comment section.

Thank you for playing You Be the Doctor. Today's episode was brought to you by The Cheerful Oncologist, who reminds you to take care of yourself before you end up in my waiting room...