Now let me run parallel searches across the medical library and PubMed:

Excellent - great sources found. Now let me read the most relevant blocks in parallel:

Now let me read the Goldman-Cecil clinical details and Bailey & Love's surgical content, plus radiology continued, and fetch the radiology images:

Now let me fetch the bilateral effusion CXR image and read the clinical examination/diagnosis portion from Goldman-Cecil, plus Light's criteria:

Now let me read the detailed Light's criteria from Fishman's and Tintinalli's, and also get treatment/management from Goldman-Cecil:

I now have excellent comprehensive content. Let me also fetch the CT image and read the remaining management sections:

I now have comprehensive data from multiple authoritative sources. Let me update my todos and compile the final answer.