SEER Inquiry System - Search

Primary site--Brain and CNS: How is the primary site to be coded if a clinician used an MRI to diagnose a left cerebellar venous angioma? See Discussion.

Primary Site--Brain and CNS: Are meninges surrounding cranial nerves cranial meninges [C700] or a part of the specific nerve's sheath? Is the primary site for an optic nerve sheath meningioma coded to optic nerve [C723] or cranial meninges [C700]?

Primary site--Bladder: What is the primary site for bladder tumor biopsy: invasive adenocarcinoma, enteric type favor urachal origin, stage III

Primary Site--Bladder: Does instruction #4 in the Urinary Sites Solid Tumor Rules Instructions for Coding Primary Site apply to a mix of in situ and invasive urothelial tumors?

Instruction #4: Code Urinary System NOS C689 when there are multiple non-contiguous tumors in multiple organs within the urinary system.

See Discussion.

Primary site--Anus/Anal Canal: What site do you code squamous cell carcinoma of the anal verge?

Other Cancer Directed Therapy--Hematopoietic, NOS: Is "aspirin" treatment for primary polycythemia? See discussion.

Neoadjuvant treatment/Grade--Prostate: How should the grade/differentiation field be coded when hormone therapy is given prior to radiation for metastatic prostate cancer? Is hormone treatment "neoadjuvant treatment" in this situation? Per NCCN guidelines, neoadjuvant hormone therapy is strongly discouraged outside of a clinical trial for localized disease. However for metastatic disease, hormone is recommended (gold standard). See discussion.

Multiplicity Counter--Ovary: Given the diffuse nature of ovarian cancer, should we count bilateral parenchymal involvment of ovaries as two tumors? See Discussion.

Multiple primaries/Primary site--Heme & Lymphoid Neoplasms: How many primaries are there and how should I code the primary site(s)? See discussion.

Multiple primaries/Primary site--Heme & Lymphoid Neoplasms: Are plasmacytomas in thyroid and laryngeal masses one primary based on rule M2, abstract a single primary when there is a single histology? If so, what is the primary site? See Discussion.