SEER Inquiry System - Question 20130157 Details

Primary Site--Heme & Lymphoid Neoplasms: What primary site code should be assigned and what rule justifies that code?

Scenario: Pleural effusion, underwent thoracentesis. Pleural fluid unexpectedly showed Large B-Cell Lymphoma. Extensive workup including CT & PET was done and all findings were within normal limits. No evidence of lymphoma was seen and no palpable adenopathy was found. The only indication of lymphoma was the malignant pleural effusion.