SEER Inquiry System - Home

Diagnostic confirmation--Heme & Lymphoid Neoplasms: Is Diagnostic Confirmation coded as 5 (positive laboratory test/ marker study) or code 8 (clinical diagnosis only) for a case that has a positive JAK2 mutation, and based on the results of the JAK2, the physician diagnosed the patient with polycythemia vera?  There were no blood smears or bone marrow biopsies done.

Reportability--Head & Neck: Is dentinoameloblastoma reportable, and if so, what is the correct histology code?  See Discussion.

MP/H Rules/Multiple primaries--Thyroid: Is medullary carcinoma of the right lobe of the thyroid, with foci of papillary microcarcinoma in both lobes, one primary with mixed histology (8347/3) or two separate primaries?

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.

MP/H Rules/Histology--Breast:  Should encapsulated papillary carcinoma of the breast with a separate focus of ductal carcinoma in situ be coded as 8050/2 (papillary carcinoma) and staged as in situ?  See Discussion.

Reportability/MP/H Rules/Multiple primaries: Is a ganglioneuroblastoma (9490/3) following a melanoma (8720/3) a new primary if the diagnosing pathologist states:  ‘Given the clinical context and patient age, then I believe that this may represent transdifferentiation of metastatic melanoma’?  If this is a new primary, what MP/H rule would apply?  See Discussion.

 

Histology/Diagnostic confirmation--Heme & Lymphoid Neoplams:  Would you code the NOS term when follicular lymphoma is favored? What would diagnostic confirmation be coded if a positive fine needle aspirate (FNA) is followed by a positive flow cytometry (ambiguous term)?  See Discussion.

MP/H Rules/Multiple primaries--Urinary: Is a renal pelvis diagnosed 5/2016 a separate primary when the first invasive bladder was 12/2011? Per rule M7, the 5/2016 renal pelvis is more than 3 years later. Does Multiple Primary/Histology (MP/H) rule M7 refer back to the original diagnosis date or to the last occurrence?  See Discussion.

Reportability/Date of diagnosis--Small intestine: Is this case reportable?Widely metastatic gastrointestinal stomal tumor (GIST) was diagnosed at an out-of-state facility in 2017 and referred back to a hospital in our state for chemotherapy where there is a history of a small bowel resection of GIST of uncertain malignant potential (8936/1) doneat the hospital in 2003. If so, is the diagnosis date 2003 or 2017? See Discussion.

Grade/Neuroblastoma:  What grade is to be used when pathology states only differentiating retroperitoneal neuroblastoma?