Over the past year I’ve developed drenching night sweats and enlarged lymph nodes in my neck and collarbone that can...

I'm sorry you're going through this uncertainty. Let me help you understand what's happening and what to expect.

Understanding Your Situation

Your symptoms and findings:

• Night sweats (drenching enough to notice) and palpable lymph nodes are classic "B symptoms" that oncologists take seriously
• Normal blood work is actually somewhat reassuring, but elevated LDH (lactate dehydrogenase) is a red flag that warrants investigation
• LDH is a marker of cell turnover/damage and can indicate lymphoma or other malignancies, but it's NOT specific to cancer alone

Why your doctor is concerned about recurrence: Given your history of cancer and these new findings, your oncologist is following appropriate clinical reasoning. According to NCCN Guidelines for lymphoma and other cancers, when patients present with B symptoms + lymphadenopathy + elevated LDH, imaging (PET scan) is the standard next step to determine if there's active disease.

What the PET Scan Will Show

The PET scan is crucial because it will:

• Show which lymph nodes are metabolically active (suspicious for cancer)
• Help determine if this is recurrence vs. infection/inflammation
• Guide biopsy decisions if needed
• Establish a baseline if treatment is recommended

Important Context

Elevated LDH alone doesn't mean recurrence. It can also indicate:

• Infection or inflammation
• Liver disease
• Muscle injury
• Other benign conditions

This is exactly why imaging is the next step—to get the full picture.

Questions to Ask Your Oncologist Before/After the PET Scan

1. "Based on my history, what are you most concerned about, and what would change your approach if the PET scan is negative vs. positive?"

2. "If the PET scan shows active disease, what staging and additional testing would you recommend?"

3. "What's the timeline for results, and when would we discuss next steps?"

4. "Are there any other tests (like a biopsy) that might be needed depending on what the PET shows?"

5. "What should I monitor for in the meantime, and when should I call if symptoms worsen?"

What to Expect

• PET scans take 2-3 hours total (including waiting for the radioactive tracer to circulate)
• Results typically available within a few days
• Your oncologist will review results with you and discuss implications

According to American Cancer Society guidance, the combination of clinical symptoms, lab findings, and imaging helps oncologists make informed decisions about whether treatment is needed and what type.

This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.

Is there anything specific about the PET scan process or your upcoming appointment that would help you feel more prepared?