SEER Inquiry System - View
Source 1: 2012 Heme & Lymph Manual & DB
Primary site--Heme & Lymphoid Neoplams: What is the primary site and how do I navigate the hemato manual to arrive at the answer? See discussion.
2011 case: 15 cm mass involving terminal ileum, cecum and adjacent mesentery. Pathology diagnosed diffuse large b-cell lymphoma. Staging PET/CT revealed 2.5cm glucose avid mass at base of tongue and a left cervical lymph node. Biopsy of base of tongue: diffuse large B-cell lymphoma.
Go to database and look up 9680/3, which states that diffuse large B-cell lymphoma may have lesions in ileocecal region or jaws. Bone marrow and peripheral blood may be involved. Patients present with lymphadenopathy or mass lesions in extranodal site. Use Module 7 for assigning primary site. Since you have two extranodal sites and involvement of regional lymph nodes for one of those sites, use Rule PH36 and assign primary site C779.